About This Recipe

When it comes to keto desserts, few treats feel as bright, refreshing, and satisfying as Keto Key Lime Pie Bars. This recipe transforms the classic tropical favorite into a low-carb masterpiece with a buttery almond flour crust and a smooth, tangy lime filling. The result is a dessert that tastes indulgent yet remains completely sugar-free and gluten-free, making it perfect for anyone following a keto or low-carb lifestyle.

One of the best things about this recipe is its simplicity. The crust comes together quickly with almond flour, butter, and a touch of sweetener, baked until lightly golden to provide the perfect base. The filling is a luscious blend of fresh lime juice, zest, cream cheese, eggs, and keto-friendly sweetener, creating a creamy custard-like texture with just the right balance of sweet and tart. If you’ve ever loved traditional key lime pie, you’ll be amazed at how this low-carb version captures the same tropical flavor without the sugar.

From a nutritional standpoint, these bars are an excellent choice. Each square delivers healthy fats, moderate protein, and only a few net carbs, making them an easy fit for your macros. They’re also portion-friendly—simply cut into squares and serve, which makes them ideal for meal prep, family gatherings, or even as a make-ahead dessert for parties.

Beyond taste and nutrition, these bars are incredibly versatile. They can be served chilled straight from the fridge for a refreshing summer treat or topped with sugar-free whipped cream for a more decadent finish. You can even freeze them in individual portions for a grab-and-go keto dessert anytime cravings strike.

In short, these Keto Key Lime Pie Bars offer everything you want in a dessert: flavor, texture, and satisfaction—all without the carbs. If you’re looking for a crowd-pleaser that feels special but stays keto-friendly, this recipe is bound to become a go-to in your dessert rotation.

Jump to Recipe

Why You’ll Love This Recipe

Fresh, zesty lime flavor 🌿
Creamy filling + buttery almond flour crust
Keto, sugar-free, and gluten-free
Easy to make in one pan
Great for parties, meal prep, or a quick snack

Servings: 16 bars

Ingredients

For the crust:
- 1 ½ cups almond flour
- ¼ cup powdered erythritol or monk fruit sweetener
- ½ cup butter, melted
- Pinch of salt
For the filling:
- 8 oz (225 g) cream cheese, softened
- 3 large eggs
- ½ cup fresh key lime juice (or regular lime juice)
- 1 tbsp lime zest
- ½ cup powdered erythritol or monk fruit sweetener
- ½ cup heavy cream
- 1 tsp vanilla extract
Optional garnish: extra lime zest or sugar-free whipped cream

Instructions

Preheat oven to 175°C (350°F). Line an 8x8-inch baking dish with parchment paper.
In a bowl, mix almond flour, sweetener, melted butter, and salt until crumbly.
Press mixture firmly into baking dish to form an even crust. Bake 10–12 minutes, until lightly golden.
In another bowl, beat cream cheese and sweetener until smooth. Add eggs one at a time, mixing well.
Stir in lime juice, zest, heavy cream, and vanilla until fully combined.
Pour filling over the baked crust and smooth the top.
Bake 20–25 minutes, until filling is set but still slightly jiggly in the center.
Cool completely, then refrigerate at least 2 hours before cutting into bars.
Garnish with lime zest or whipped cream before serving.

Nutrition

(per bar, 1/16)

Calories: ~160
Fat: 14g
Protein: 4g
Net Carbs: 3g
Fiber: 1g

FAQ

Can I use bottled lime juice instead of fresh?
Fresh lime juice gives the best flavor, but bottled juice can work in a pinch.

Can these bars be made dairy-free?
Yes—swap the cream cheese for dairy-free cream cheese and use coconut cream instead of heavy cream.

How long do these bars last in the fridge?
Stored in an airtight container, they’ll keep up to 5 days.

Can I freeze Keto Key Lime Pie Bars?
Absolutely. Wrap bars individually and freeze for up to 2 months. Thaw in the fridge before serving.

Variations & Substitutions

Try lemon juice instead of lime for keto lemon pie bars.
Use coconut cream for a tropical flavor boost.
Add unsweetened shredded coconut to the crust for extra texture.

Serving Suggestions

Serve chilled with sugar-free whipped cream.
Garnish with extra lime zest or thin lime slices.
Pair with fresh berries for added freshness.

Recipe Card

Keto Key Lime Pie Bars

Name: Keto Key Lime Pie Bars
Prep time: 15 min
Cook time: 35 min
Total time: 2 h
Yield: 16 bars
Cuisine: Low Carb / Keto
Ingredients: 1 1/2 cups almond flour; 1/4 cup powdered erythritol; 1/2 cup butter, melted; Pinch of salt; 225 g cream cheese, softened; 3 large eggs; 1/2 cup fresh key lime juice; 1 tbsp lime zest; 1/2 cup powdered erythritol; 1/2 cup heavy cream; 1 tsp vanilla extract

Creamy, tangy, and sugar-free, these Keto Key Lime Pie Bars feature a buttery almond flour crust and a refreshing lime filling for the perfect low-carb dessert.

Yield: 16 bars • Prep: 15 min • Cook: 35 min • Total: 2 hrs

Ingredients

For the crust

1 1/2 cups almond flour
1/4 cup powdered erythritol
1/2 cup butter, melted
Pinch of salt

For the filling

225 g cream cheese, softened
3 large eggs
1/2 cup fresh key lime juice
1 tbsp lime zest
1/2 cup powdered erythritol
1/2 cup heavy cream
1 tsp vanilla extract

Instructions

Preheat oven to 175°C (350°F). Line an 8x8-inch pan with parchment paper.
Mix almond flour, erythritol, butter, and salt. Press into pan. Bake 10–12 minutes until golden.
Beat cream cheese and sweetener until smooth. Add eggs one at a time.
Stir in lime juice, zest, cream, and vanilla. Mix well.
Pour filling over crust. Bake 20–25 minutes until set but slightly jiggly.
Cool completely. Chill 2+ hours before slicing into bars.

Nutrition (per bar, 1/16)

Calories: 160
Fat: 14 g
Protein: 4 g
Net Carbs: 3 g
Fiber: 1 g

Dessert • Low Carb / Keto • keto key lime bars, low carb dessert, sugar free pie bars, almond flour crust

Final Thoughts

Loved these Keto Key Lime Pie Bars? 🍋 Save them to Pinterest, share on Instagram, and impress your friends with a sugar-free dessert that tastes like a tropical getaway. They’re tangy, creamy, and so good you’ll forget they’re low-carb! ✨