Delightful Gluten-Free Dairy-Free Key Lime Pie

The Ultimate Gluten-Free & Dairy-Free Key Lime Pie: A Zesty, Creamy Delight for Everyone

Craving a refreshingly sweet and tangy dessert that caters to specific dietary needs without compromising on flavor or texture? Look no further! This spectacular Gluten-Free Dairy-Free Key Lime Pie recipe is your perfect solution. It delivers all the vibrant, zesty charm of a classic key lime pie, making it an ideal treat for warm summer days, festive gatherings, or any moment you desire a taste of sunshine.

Crafting a dairy-free key lime pie that truly mirrors the authentic taste and perfectly set, creamy consistency of its traditional counterpart can be a real challenge. Many attempts fall short, resulting in a pie that’s either too runny or lacks that distinctive key lime punch. However, this meticulously developed recipe rises above the rest, achieving that coveted “real thing” experience. Special thanks go to my daughter, a true key lime pie aficionado, whose passion and keen palate were instrumental in perfecting this delightful creation.

A slice of creamy gluten-free dairy-free key lime pie topped with whipped cream and a lime slice on a white plate.

Why You’ll Love This Gluten-Free Dairy-Free Key Lime Pie

  • Authentic Taste & Texture Without Compromise: Get ready to indulge in a slice of pure bliss! This recipe masterfully replicates the creamy, tangy, and utterly irresistible goodness of traditional key lime pie, all while being completely dairy-free and gluten-free. You won’t believe it’s a specialty pie – it truly tastes, looks, and feels like the classic dessert everyone adores.
  • Effortless No-Bake Filling: While the crust gets a brief stint in the oven (which is optional but highly recommended for extra crunch!), the vibrant key lime filling itself requires no baking. This means less time heating up your kitchen, making it an absolute lifesaver, especially during those sweltering summer months. It’s the perfect blend of easy preparation and delicious results.
  • Reliable & Consistent Results: Unlike many non-dairy key lime pie recipes that rely on sweetened condensed coconut milk products, which can often be inconsistent and yield unpredictable results (sometimes a soupy mess!), this recipe takes a different approach. We use full-fat canned coconut milk paired with cornstarch and egg yolks to achieve a perfectly set, rich, and creamy filling every single time. Say goodbye to guesswork and hello to consistent perfection.
  • Pure Summertime Bliss on a Plate: There’s something undeniably magical about key lime pie that instantly transports you to sunny beaches and refreshing breezes. Each forkful of this delightful pie is a burst of bright, zesty flavor that embodies the essence of summer. It’s the ultimate refreshing dessert to lighten your mood and satisfy your sweet tooth, anytime you need a little dose of warmth and joy.
A vibrant gluten-free dairy-free key lime pie, garnished with fresh lime slices and zest, ready to be served.

Ingredient Notes, Variations, and Substitutions for Your Perfect Pie

Understanding each ingredient and its role is key to mastering this delicious key lime pie. Here’s a detailed guide to ensure your pie turns out perfectly, along with helpful tips for variations and substitutions.

Graham Cracker Crust: Homemade vs. Ready-Made

The foundation of any great key lime pie is its crust. We offer two fantastic options:

OPTION 1 – HOMEMADE GRAHAM CRACKER CRUST

Our homemade graham cracker crust is incredibly simple, requiring just three basic ingredients, and offers superior flavor and texture. It’s easy to customize for your dietary needs.

  • Graham Cracker Crumbs:
    • Dairy-Free Graham Cracker Crumbs: You’ll be surprised to find that many popular brands, including classic “good ‘ol Keebler,” are naturally dairy-free. However, it’s always crucial to double-check labels, as formulations can change.
    • Gluten-Free Graham Cracker Crumbs: For a truly gluten-free and dairy-free option, Kinnikinnick Graham Style Crumbs are an excellent choice. They are widely available in specialty grocery stores or online platforms like Amazon. Alternatively, you can purchase gluten-free and dairy-free graham crackers, place them in a sealed bag, and crush them finely using a rolling pin or food processor to create your own crumbs.
  • Melted Dairy-Free Butter: This acts as the binder for your crumbs, creating a rich base. Brands like Earth Balance buttery sticks are reliable and widely available. Ensure it’s fully melted before mixing.
  • Granulated Sugar: A touch of sugar helps sweeten the crust and aids in achieving that delightful crispiness.

OPTION 2 – READY-MADE CRUST

If you’re short on time or prefer a shortcut, a ready-made graham cracker crust is a perfectly acceptable option. For best results and a generous filling, opt for a 10-inch deep-dish crust. Keebler offers a dairy-free variety, and Mi-Del provides an excellent option that is both gluten-free and dairy-free. Always confirm the dietary claims on the packaging.

Key Lime Filling Ingredients: The Heart of the Pie

Close-up of fresh key limes, zest, and egg yolks, ready for making the key lime pie filling.

This is where the magic happens! Each ingredient plays a vital role in creating the iconic sweet and tart flavor, and the luxurious, creamy texture.

  • Fresh Key Limes: This recipe truly shines with fresh key limes. These small, intensely aromatic limes have a distinct tartness and floral notes that differ from regular Persian limes, delivering a more authentic key lime flavor. While fresh is always superior, if key limes are out of season or hard to find, Nellie & Joe’s Key West Lime Juice is a highly recommended bottled alternative that captures much of their unique essence. If neither is available, regular limes can be used, but be aware the pie’s flavor profile will be slightly different—still delicious, but less intensely tangy.
  • Egg Yolks: These are crucial for a rich, firm, and creamy filling. You’ll use only the yolks, so save those egg whites for a healthy omelette or freeze them for future baking projects! The emulsifying properties of egg yolks are particularly important in a dairy-free pie, helping to bind all the ingredients together and achieve that perfect set.
  • Full-Fat, Unsweetened Canned Coconut Milk: This is our secret weapon for dairy-free creaminess. The “full-fat” aspect is non-negotiable for the right consistency and richness; avoid “lite” versions. You’ll use the entire can (stirred well if separated). Unlike many recipes that rely on sweetened condensed coconut milk, which can be inconsistent in texture and sweetness across brands, this recipe uses standard canned coconut milk, allowing for precise control over the pie’s sweetness and ensuring a reliable set.
  • Cornstarch: This gluten-free thickener is essential for achieving the pie’s characteristic firm, yet silky, texture. While arrowroot powder or tapioca flour can be used as alternatives, cornstarch is highly recommended for its consistent thickening power, and this recipe has been developed specifically with it. Even if you don’t require a gluten-free pie, cornstarch is preferred over wheat flour, which can alter the flavor and clarity of the filling. You’ll need 5 tablespoons.
  • Dairy-Free Butter: We use dairy-free butter to add richness and a lovely mouthfeel to the filling. Earth Balance buttery sticks are a fantastic choice, and since they’re slightly salty, no additional salt is typically needed.
    • NOTE: If your chosen dairy-free butter (or real butter, if not dairy-free) is unsalted, consider adding a small pinch of salt (about ¼ teaspoon) to balance the flavors.
  • Granulated Sugar: This provides the necessary sweetness to balance the tartness of the key lime juice, creating that delightful sweet-tart harmony.
  • Vanilla Extract: A touch of vanilla rounds out the flavors, adding warmth and depth to the bright lime.

Whipped Topping: The Perfect Cloud of Creaminess

No key lime pie is complete without a fluffy cloud of whipped topping! You have two great choices:

OPTION 1 – STORE-BOUGHT DAIRY-FREE WHIPPED TOPPING

Convenience is key! Brands like So Delicious CocoWhip offer a ready-to-use dairy-free whipped topping, though it does have a noticeable coconut flavor. For a coconut-free option, TruWhip Vegan Whipped Topping is excellent, but its availability might vary by location.

OPTION 2 – HOMEMADE DAIRY-FREE WHIPPED TOPPING

Making your own is surprisingly simple and allows you to control the ingredients. Despite using coconut milk, the coconut flavor is typically mild and doesn’t overpower the key lime. You’ll need:

  • ¾ cup of the cold, solid part of a refrigerated can of unsweetened, full-fat coconut milk: This is crucial. Refrigerate the can upside down overnight to ensure the cream separates and solidifies at the top.
  • 3 Tbsp of powdered sugar: To sweeten the topping.
  • 1 tsp of vanilla extract: For a hint of warmth.

How to Make This Dairy-Free Gluten-Free Key Lime Pie: Step-by-Step Guide

Creating this delicious pie is a straightforward process. Follow these simple steps for a perfect outcome. (Note: A printable recipe card with exact measurements and detailed steps is available at the end of this post.)

Step-by-step image of key lime pie filling being poured into the graham cracker crust.

STEP 1: Prepare the Crust

  • Mix and Press: If making a homemade crust, combine the graham cracker crumbs, melted dairy-free butter, and granulated sugar in a bowl. Mix thoroughly until the crumbs are evenly moistened. Then, firmly press this mixture into a 10-inch deep-dish pie plate, ensuring an even layer across the bottom and up the sides.
  • Bake Briefly or Refrigerate: For an extra crispy and slightly toasted flavor, you can bake the crust at 350°F (175°C) for 7-8 minutes. This brief bake also helps the ingredients bind together more effectively. Alternatively, if you prefer a no-bake crust or want to keep your oven off, simply chill the crust in the refrigerator while you prepare the filling. Ensure the filling cools completely before adding it to a no-bake crust. When it’s over 100 degrees in Texas and I’m craving this pie, I definitely choose the refrigerator method!

STEP 2: Zest then Juice the Key Limes

Using a microplane zester, carefully remove only the bright green outer layer of the key lime peel, avoiding the bitter white pith. You’ll need 2 teaspoons of zest for the filling, plus an additional teaspoon for garnishing, if desired. Once zested, cut the limes in half and juice them using a small citrus juicer until you have 2/3 cup of fresh key lime juice. If using bottled juice, simply measure it out.

STEP 3: Make the Key Lime Pie Filling

In a large pot, combine the granulated sugar and cornstarch off the heat, mixing thoroughly to prevent lumps. Then, add the egg yolks, full-fat room temperature coconut milk, key lime juice, and 2 teaspoons of key lime zest. Place the pot over medium heat and whisk continuously until the mixture comes to a boil. Continue whisking constantly for another 30-60 seconds after boiling, until the filling visibly thickens to a pudding-like consistency. Remove from heat, then stir in the dairy-free butter and vanilla extract until smooth and well combined.

STEP 4: Pour and Refrigerate to Let the Pie “Set”

Allow the prepared filling to cool for about 5 minutes, then give it another quick stir before pouring it evenly into your prepared pie crust. Cover the pie plate tightly with plastic wrap or a pie lid to prevent a skin from forming. Refrigerate for at least 4 hours, though overnight is highly recommended for the pie to fully set and for the flavors to meld and intensify, achieving maximum deliciousness.

STEP 5: Top with Pre-Made Whipped Topping (or Make and Use Homemade Dairy-Free Whipped Cream)

Just before serving, adorn your chilled key lime pie with a generous layer of dairy-free whipped topping. If making homemade whipped topping, ensure your coconut milk has been thoroughly chilled, and your mixing bowl and beaters are cold. Whip the solid coconut cream with powdered sugar and vanilla until light and fluffy. Garnish with additional key lime zest or thin key lime slices for an extra touch of elegance and fresh aroma.

A slice of gluten-free dairy-free key lime pie topped with homemade whipped cream and lime zest.

Frequently Asked Questions About Gluten-Free Dairy-Free Key Lime Pie

Here are answers to some common questions about making and enjoying this delightful key lime pie.

Can I use a ready-made graham cracker crust for key lime pie?

Absolutely! Using a pre-made crust is a fantastic time-saver. You can easily find dairy-free options like those from Keebler, or both gluten-free and dairy-free varieties, such as those made by Mi-Del. Just make sure to check the labels to ensure it meets your specific dietary needs.

Can you freeze key lime pie?

Yes, homemade key lime pie freezes exceptionally well, maintaining its quality for up to 2-3 months. For easy freezing and thawing, consider preparing your pie in an aluminum pie tin. When freezing, it’s highly recommended to omit the whipped topping until you’re ready to serve. Wrap the pie tightly first in plastic wrap, then in aluminum foil, ensuring no air exposure. To thaw, simply transfer it to the refrigerator overnight before topping and serving.

Several slices of gluten-free dairy-free key lime pie artfully arranged on a serving plate.

Can I use bottled key lime juice instead of fresh key lime juice?

Certainly. While fresh key limes offer the most vibrant and authentic flavor, they are seasonal and can sometimes be challenging to find. If fresh key limes aren’t available, or if you simply wish to save time on juicing, Nellie & Joe’s Key West Lime Juice is an excellent, high-quality bottled option that delivers a very close flavor profile.

Can I use regular limes instead of key limes for this pie?

Yes, you can use regular Persian limes. The pie will still be utterly delicious, but the flavor will be subtly different. Key limes are known for their more intense, aromatic tang, whereas regular limes tend to be a bit milder and less floral. Adjusting the amount of sugar slightly might be beneficial if you find regular limes less tart.

How long should I refrigerate before serving?

For the best results, refrigerate your key lime pie for a minimum of 4 hours. However, for the pie to achieve its optimal firmness and allow the complex flavors to fully develop and intensify, chilling it overnight is truly ideal. Patience is a virtue when it comes to a perfectly set, flavorful key lime pie!

A beautifully set gluten-free dairy-free key lime pie in a pie dish, ready for slicing.
A slice of creamy gluten-free dairy-free key lime pie with whipped cream and lime zest.

Dairy-Free Key Lime Pie (Gluten-Free)

Kelly Kirkendoll

A sweet, tangy, and incredibly creamy homemade gluten-free and dairy-free key lime pie that tastes like pure summer. You won’t even realize it’s free of anything!

5 from 1 vote
Print Recipe
Pin Recipe

Prep Time 15 minutes
Cook Time 10 minutes
Cool and let it set 4 hours
Total Time 4 hours 20 minutes

Course Dessert
Cuisine American, Dairy-Free, Gluten-Free

Servings 10 servings
Calories 500 kcal

Equipment

  • 1 large pot
  • 1 Whisk
  • 1 microplane citrus zester
  • 1 small citrus juicer
  • 1 10 inch pie plate (one with a lid is ideal but not necessary)
  • 1 stand or electric mixer (if making homemade whipped topping)

Ingredients

  

Graham Cracker Crust

  • 2 cups graham cracker crumbs (dairy-free and/or gluten-free, based on your dietary needs)
  • 1/2 cup granulated sugar
  • 1/2 cup melted vegan butter (I use Earth Balance buttery sticks)

Dairy-Free Key Lime Pie Filling

  • 2/3 cup fresh squeezed key lime juice (will take approx. 18-20 key limes) (or bottled key lime juice if can’t find key limes)
  • 2 tsp fresh key lime zest (plus 1 tsp if desired, for garnishing)
  • 1 1/4 cup granulated sugar
  • 5 Tbsp cornstarch (or arrowroot powder or tapioca flour)
  • 4 egg yolks
  • 1 can canned coconut milk at room temperature (full fat, not lite)
  • 3 Tbsp dairy-free/vegan butter (if you don’t have a dairy allergy, you can use real butter)
  • 1 tsp vanilla extract

Dairy-Free Whipped Topping

  • 3/4 cup refrigerated, COLD solid part of canned coconut milk (full fat, not lite – you’ll use only the top, solid part)
  • 3 Tbsp powdered sugar
  • 1 tsp vanilla extract

Garnish/Decorations

  • 1 tsp key lime zest
  • key lime slices

Instructions

 

Make the Graham Cracker Crust

  • Add all 3 ingredients – graham cracker crumbs, melted dairy-free butter and sugar – into a small bowl and mix well.
  • Press the mixture firmly into a 10-inch pie plate, creating an even layer.
  • Optionally, bake the crust at 350°F (175°C) for 7-8 minutes for a crispier texture, or simply place it in the refrigerator to chill while you prepare the filling.

Make the Pie Filling

  • Separate the egg yolks from the egg whites. Tip: Save the egg whites to make an omelette or freeze them for later use in other recipes.
  • Wash and dry your key limes. Using a microplane zester, carefully zest the green part of the rind to get 2 teaspoons for the filling and an additional 1 teaspoon for garnishing if desired.
  • Cut the zested key limes in half and juice them into a liquid measuring cup or bowl until you have 2/3 cup of juice.
  • In a large pot, with the heat OFF, combine the granulated sugar and cornstarch. Whisk well to ensure there are no lumps.
  • Place the pot over medium heat. Add the 4 egg yolks, the entire can of room-temperature full-fat coconut milk, the key lime juice, and 2 teaspoons of key lime zest. Whisk constantly over medium to medium-high heat until the mixture comes to a full boil.
  • Once boiling, continue to whisk vigorously for another 30-60 seconds (typically around 45 seconds) until the filling visibly thickens to a rich, pudding-like consistency.
  • Remove the pot from the heat. Stir in the dairy-free vegan butter and vanilla extract until the butter is completely melted and all ingredients are smoothly blended.
  • Allow the filling to cool slightly for 5 minutes, then give it another stir before pouring it into your prepared pie crust.
  • Cover the pie tightly with a pie pan lid or plastic wrap and place it in the refrigerator for at least 4 hours. For the best flavor and set, chilling it overnight is highly recommended.
  • When you are ready to serve, add your chosen whipped topping and any garnishments, such as fresh key lime zest or thin key lime slices.

Make the Whipped Topping (if not using pre-made)

  • For best results, ensure your full-fat canned coconut milk has been refrigerated for at least 24 hours (preferably upside down). While making the filling, place your mixing bowl in the refrigerator and your beater attachments in the freezer. Cold temperatures are crucial for whipping coconut cream.
  • Open your chilled can of coconut milk without shaking it. Carefully scoop out at least 3/4 cup of the thick, cold solid cream from the top, trying to leave as much liquid behind as possible. If the can yields a full cup of solid cream, use it; if it has less, you may unfortunately need to open a second chilled can.
  • Transfer the solid coconut cream to your cold mixing bowl. Add the powdered sugar and vanilla extract. Beat on high speed with your chilled beaters until the mixture becomes light, fluffy, and holds soft peaks. Use this immediately to top your chilled pie when ready to serve. Leftover topping can be stored in the refrigerator if your pie isn’t ready yet.

Nutrition

Calories: 500kcalCarbohydrates: 59gProtein: 4gFat: 29gSaturated Fat: 15gPolyunsaturated Fat: 4gMonounsaturated Fat: 8gTrans Fat: 2gCholesterol: 78mgSodium: 221mgPotassium: 214mgFiber: 2gSugar: 44gVitamin A: 112IUVitamin C: 7mgCalcium: 36mgIron: 2mg
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