Keto Key Lime Pie : Creamy, Low-Carb & Sugar-Free Perfection

Tangy, creamy, and perfectly balanced — this Keto Key Lime Pie is the ultimate low-carb dessert that proves you don’t need sugar to enjoy something indulgent. Made with fresh lime juice, a buttery pecan crust, and a luscious creamy filling, this dessert brings all the tropical brightness of the original pie with a guilt-free twist.

Whether you’re following a ketogenic diet or simply want a lighter, low-calorie key lime pie, this recipe checks every box: smooth texture, zesty flavor, and a crumbly pecan crust that melts in your mouth. It’s a show-stopping dessert for any occasion — especially when you crave something fresh and not overly sweet.

If you love refreshing desserts like this, you’ll also adore the fruity Strawberry Cloud Cake or the indulgent Scoop of Heaven Trifle.

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Why You’ll Love This Low-Carb Key Lime Pie Recipe

This pie captures the essence of a tropical treat while staying keto-friendly and sugar-free. It’s everything you could want in a dessert:

• Low in carbs, high in flavor. Sweetened naturally with keto-approved sweeteners.
• Creamy and smooth. The filling is rich yet light with a hint of citrus zing.
• Versatile. Can be baked as a whole pie or cut into portable Keto Key Lime Pie Bars.
• Perfect for meal prep. Stores beautifully in the fridge or freezer for quick desserts.

Pair it with a refreshing Lavender Lemonade or a chilled Strawberry Cream Soda for the perfect ending to a summer meal.

Ingredients for Keto Key Lime Pie With Pecan Crust

For the Pecan Crust

• 1 ½ cups pecan flour (or finely ground pecans)
• ¼ cup granulated erythritol or monk fruit sweetener
• ¼ cup melted butter
• 1 teaspoon vanilla extract
• Pinch of salt

For the Filling

• 1 ½ cups cream cheese, softened
• ½ cup sour cream
• 3 large eggs
• ½ cup powdered erythritol
• ⅓ cup fresh key lime juice (or regular lime juice)
• 1 tablespoon lime zest
• ½ teaspoon vanilla extract

Optional Toppings

• Whipped coconut cream or sugar-free whipped topping
• Extra lime zest or thin lime slices

Want another healthy yet creamy dessert idea? Try the deliciously rich Pumpkin Cheesecake Cookies.

Kitchen Tools You’ll Need

Making this pie is easy when you have:

• 9-inch pie pan or square pan (for bars)
• Mixing bowls
• Hand mixer or stand mixer
• Spatula
• Measuring cups and spoons
• Zester or microplane
• Oven and cooling rack

You can also use these tools for other low-carb sweets, like the silky Pumpkin Cheesecake Truffles.

Step-by-Step: How to Make Key Lime Pie Keto

1. Prepare the crust. Preheat the oven to 325°F (165°C). In a bowl, mix pecan flour, sweetener, melted butter, vanilla, and salt. Press the mixture firmly into the bottom of your pie pan or baking dish.
2. Bake the crust. Bake for 10–12 minutes until lightly golden and set. Remove and let cool completely.
3. Make the filling. In a large bowl, beat cream cheese and powdered sweetener until smooth. Add sour cream, eggs, lime juice, zest, and vanilla. Beat until silky and fully combined.
4. Fill and bake. Pour the filling over the cooled crust. Bake for 20–25 minutes, or until the center is just set but still slightly jiggly.
5. Cool and chill. Let cool to room temperature, then refrigerate for at least 4 hours (or overnight) to firm up.
6. Serve and enjoy. Top with sugar-free whipped cream and lime zest before serving.

Your kitchen will smell bright and citrusy — a clean, refreshing aroma that screams summer comfort.

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Tips for Making Perfect Sugar-Free Key Lime Pie

• Use fresh lime juice. Bottled juice can taste bitter — fresh key limes or regular limes work best.
• Don’t overbake. The pie should wobble slightly in the center when removed from the oven.
• Chill thoroughly. This helps the filling set and develop its creamy texture.
• Use a powdered sweetener. It dissolves better and prevents a gritty texture.
• Add zest for depth. Lime zest gives the pie that unmistakable citrus pop.

If you enjoy keto baking, you’ll also love the high-protein Pumpkin Cottage Cheese Pancakes — fluffy, flavorful, and low-carb.

Common Mistakes to Avoid in Low-Carb Sweets

1. Using too much sweetener — erythritol can crystallize if overused.
2. Skipping the cooling time — rushing can lead to a runny filling.
3. Overbeating eggs — this can create air bubbles and cracks.
4. Using low-fat dairy — full-fat ingredients make the texture rich and smooth.

For consistently great results with keto desserts, remember that slow cooling and overnight chilling are key.

Variations: Keto Key Lime Pie Bars and Low-Fat Options

• Keto Key Lime Pie Bars: Use a square pan, bake the crust for 10 minutes, pour filling, and bake until just set. Chill, then slice into bars for easy portion control.
• Low-Fat Key Lime Pie: Substitute half the cream cheese with Greek yogurt and use light sour cream.
• Dairy-Free Key Lime Pie: Swap cream cheese for coconut cream and use vegan butter in the crust.
• No-Bake Option: Skip baking altogether — chill the crust and use gelatin in the filling for structure.

For another creative low-carb treat, try these snackable Snickerdoodle Protein Bites — perfect for sweet cravings without sugar.

Serving Suggestions for This Key Lime Dessert

This bright and tangy dessert pairs beautifully with:

• A cup of iced herbal tea or Pumpkin Spice Cold Brew
• Fresh berries on the side for natural sweetness
• A sprinkle of toasted coconut for texture
• A drizzle of keto-friendly chocolate for contrast

Serve it as the refreshing finale to a meal featuring Garlic Parmesan Chicken Skewers or Stuffed Acorn Squash.

Storing and Freezing Sugar-Free Key Lime Pie

• In the refrigerator: Store covered for up to 5 days.
• In the freezer: Freeze slices individually wrapped for up to 2 months. Thaw overnight in the refrigerator.
• To serve again: Let sit at room temperature for 10–15 minutes for the perfect creamy texture.

You can also freeze Keto Key Lime Pie Bars for quick, portion-controlled treats.

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FAQs About Keto Key Lime Pie Recipes

Can I use almond flour instead of pecan flour?
Yes, though the flavor will be milder. Add a few drops of butter extract for richness.

Is bottled lime juice okay?
Fresh juice is best, but bottled can work if it’s 100% pure with no added sugars.

How many carbs are in one slice?
Each slice contains about 4–5 net carbs, depending on sweetener brands.

Can I make it dairy-free?
Yes! Use coconut cream or vegan cream cheese alternatives.

How long does it need to chill?
At least 4 hours, but overnight yields the best flavor and firmness.

More Low-Carb Sweets to Try

• Pumpkin Protein Muffins
• No-Bake Pumpkin Pie Balls
• Paleo Banana Bread Muffins
• Chocolate Chip Pumpkin Pancakes

These keto-friendly treats prove that low-carb baking can be every bit as delicious as traditional desserts.

Final Thoughts: The Best Easy Key Lime Pie for Keto Lovers

This Keto Key Lime Pie is a refreshing, creamy masterpiece that satisfies every dessert craving without the sugar crash. With its zesty filling, buttery pecan crust, and luscious creaminess, it’s proof that you can enjoy decadent desserts even on a low-carb lifestyle.

Whether you make it as a full pie, bars, or no-bake version, it’s bound to become a favorite in your dessert rotation. If you loved this recipe, please share it with friends and family — and subscribe to the blog for more delicious, health-conscious desserts.

For your next baking day, you might also love this cozy Classic Dutch Oven Pumpkin Bread or rich Garlic Butter Ahi Tuna for a savory finish to a keto feast.

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