If you’ve ever dreamed of indulging in a creamy, tangy slice of Key Lime Pie without the guilt, you’re in for a treat. This Keto Key Lime Pie is a low-carb twist on a classic dessert that’s perfect for any occasion. With a buttery crust made from keto cookie crumbs and a luscious filling that’s both sweet and tart, this pie will leave your taste buds dancing and your keto goals intact. Let’s dive into making this delicious and refreshing dessert that everyone will love.
The Upside of Keto Key Lime Pie

Keto Key Lime Pie is not just a dessert; it’s a celebration of flavor that aligns with your dietary goals. The vibrant lime flavor combined with the rich creaminess of the filling creates a delightful balance that is hard to resist. Plus, it’s made with wholesome ingredients that keep the carb count low while satisfying your sweet tooth. Whether you’re enjoying a sunny afternoon or celebrating a special occasion, this pie is sure to impress.
Shopping List

- 2 3/4 cups keto cookie crumbs (see notes)
- 1 tablespoon allulose sweetener
- 6 tablespoons butter, melted
- 1 cup cream cheese, softened
- 1 cup keto condensed milk
- 1/2 cup lime juice (freshly squeezed is best)
- 1 cup heavy cream
- 2 tablespoons sugar-free powdered sugar
- 1 large lime, sliced (for garnish)
Cook’s Kit

- Mixing Bowls: For combining your ingredients smoothly.
- 9-inch Pie Pan: To hold your beautiful pie.
- Electric Mixer: For achieving that perfectly creamy filling.
- Measuring Cups and Spoons: Essential for accurate ingredient measurements.
- Whisk: To mix the filling well and incorporate air into the cream.
Method: Keto Key Lime Pie
Step 1: Prepare the Crust
Start by preheating your oven to 350°F (175°C). In a mixing bowl, combine the keto cookie crumbs, melted butter, and allulose sweetener. Mix until the crumbs are evenly coated. Press the mixture firmly into the bottom and up the sides of a 9-inch pie pan. Bake the crust in the preheated oven for about 10 minutes or until slightly golden. Remove from the oven and let it cool completely.
Step 2: Make the Filling
In a large mixing bowl, beat the softened cream cheese until smooth and creamy. Gradually add the keto condensed milk, continuing to beat until well combined. Mix in the lime juice and blend until fully incorporated. The mixture should be smooth and creamy with a vibrant lime flavor.
Step 3: Whip the Cream
In another bowl, whip the heavy cream until soft peaks form. Gradually add the sugar-free powdered sugar and continue whipping until stiff peaks form. Gently fold the whipped cream into the lime filling mixture, being careful not to deflate the cream.
Step 4: Assemble the Pie
Pour the filling into the cooled crust, smoothing the top with a spatula. Refrigerate the pie for at least 4 hours, or until set. This allows the flavors to meld beautifully and the filling to firm up.
Step 5: Serve and Enjoy
Once set, slice the pie and garnish with fresh lime slices. Serve chilled and watch as your guests indulge in this delightful Keto Key Lime Pie.
In-Season Swaps
- Avocado: For a creamy twist, consider adding mashed avocado to the filling for extra richness.
- Fresh Herbs: Garnish with mint leaves for a refreshing contrast to the lime.
- Other Citrus: Swap lime juice for lemon or grapefruit juice for a different citrus profile.
Common Errors (and Fixes)
- Crust Crumbling: If your crust crumbles when sliced, try adding a bit more melted butter to the crumbs before pressing.
- Filling Not Setting: Ensure you refrigerate the pie for enough time. If it’s still runny, consider adding more cream cheese to thicken.
- Too Tart: If the pie is too tart for your taste, adjust the lime juice next time or add a touch more allulose sweetener.
Best Ways to Store
Store any leftover Keto Key Lime Pie in an airtight container in the refrigerator for up to 5 days. For longer storage, you can freeze slices wrapped in plastic wrap and then placed in a freezer-safe container for up to 3 months. Just remember to thaw in the refrigerator before serving.
Your Top Questions
Can I use regular sugar instead of allulose?
While you can use regular sugar, it will increase the carb count significantly, making it less keto-friendly. Allulose is a great low-carb alternative that provides sweetness without the calories.
Can I make this pie dairy-free?
Yes! You can substitute the cream cheese with a dairy-free cream cheese alternative and the heavy cream with coconut cream for a delicious dairy-free version.
How can I make this pie more lime-flavored?
For a more intense lime flavor, add the zest of one lime to the filling mixture. This will enhance the citrus notes beautifully.
Is this Keto Key Lime Pie suitable for meal prep?
Absolutely! This pie holds up well, making it perfect for meal prep. Just slice and store in individual containers for a quick and easy dessert throughout the week.
Let’s Eat
Now that you’ve created this incredible Keto Key Lime Pie, it’s time to slice into it and enjoy every creamy, zesty bite. This dessert is not just for special occasions; it can be a regular part of your keto lifestyle. With its refreshing taste and satisfying texture, it’s bound to become a favorite amongst friends and family. So grab a fork, dig in, and savor the deliciousness that is Keto Key Lime Pie!

Keto Key Lime Pie
Ingredients
For the Crust:
- 2 3/4 cups keto cookie crumbs (see notes)
- 1 tablespoon allulose sweetener
- 6 tablespoons butter (melted)
For the Filling:
- 1 cup cream cheese (softened)
- 1 cup keto condensed milk
- 1/2 cup lime juice (freshly squeezed is best)
- 1 cup heavy cream
- 2 tablespoons sugar-free powdered sugar
- 1 large lime (sliced for garnish)
Instructions
Method:
- Step 1: Prepare the Crust - Start by preheating your oven to 350°F (175°C). In a mixing bowl, combine the keto cookie crumbs, melted butter, and allulose sweetener. Mix until the crumbs are evenly coated. Press the mixture firmly into the bottom and up the sides of a 9-inch pie pan. Bake the crust in the preheated oven for about 10 minutes or until slightly golden. Remove from the oven and let it cool completely.
- Step 2: Make the Filling - In a large mixing bowl, beat the softened cream cheese until smooth and creamy. Gradually add the keto condensed milk, continuing to beat until well combined. Mix in the lime juice and blend until fully incorporated. The mixture should be smooth and creamy with a vibrant lime flavor.
- Step 3: Whip the Cream - In another bowl, whip the heavy cream until soft peaks form. Gradually add the sugar-free powdered sugar and continue whipping until stiff peaks form. Gently fold the whipped cream into the lime filling mixture, being careful not to deflate the cream.
- Step 4: Assemble the Pie - Pour the filling into the cooled crust, smoothing the top with a spatula. Refrigerate the pie for at least 4 hours, or until set. This allows the flavors to meld beautifully and the filling to firm up.
- Step 5: Serve and Enjoy - Once set, slice the pie and garnish with fresh lime slices. Serve chilled and watch as your guests indulge in this delightful Keto Key Lime Pie.
Equipment
- Mixing Bowls
- 9-inch pie pan
- Electric Mixer
- Measuring cups and spoons
- Whisk
Notes
- Store leftovers in an airtight container in the refrigerator for up to 5 days.
- For longer storage, freeze slices wrapped in plastic wrap for up to 3 months.
- Add lime zest to enhance the flavor.
