Homemade Key Lime Pie Recipe [VIDEO]

Catalina Castravet
By Catalina Castravet
4.95 from 19 reviews

Christmas recipes Easter Holiday Food Pies and Tarts Recipes

Cook time Cook time: 15 minutes

Homemade Key Lime Pie recipe from scratch with lots of lime zest and fresh lime juice for a fresh citrusy flavor with the most amazing creamy texture.

This cake is a perfect summer dessert, its fresh, flavorful and citrusy. Like Strawberry Poke Cake, No Bake Lemon Cheesecake and Strawberry Lava Cakes, this delicious homemade dessert would be a great addition to this summer flavor mix!

The Best Key Lime Pie

This is my tried and true Best Key Lime Pie recipe that everyone goes crazy for. The custard filling is so creamy and so full of flavor, your taste buds will explode from happiness. To make the filling extra creamy and tasty I like to combine the condensed milk with sour cream and egg yolks, which will give the filling the silkiest texture.

A good amount of key lime juice and zest are also mixed it, adding the beautiful citrusy flavor that this dessert is famous for. A creamy and smooth combo of sweet and tart! You can make your own crust or you can use a pre-made one to save time.

When it comes to the crust, I like mixing in some ground nuts. The slightly nutty flavor is a nice surprise and works well with the bolder and fresh citrus flavor.

What do you need to make Key Lime Pie from scratch:

You can make your own graham cracker crust or use a pre-made one. If you decide to make your own, here is what you will need:

  • Graham crackers crumbs
  • Melted butter
  • Sugar
  • Walnut – optional, but I prefer to add some for extra flavor.

How do you make Key Lime Pie from scratch?

This is a pretty simple dessert that in my opinion, anyone can make. You can take a few shortcuts, like using a pre-made/store-bought graham cracker pie crust and using store-bought Key Lime Juice or Lime Juice. The steps for this recipe are very simple:

  • You start by mixing the crust ingredients, press it into the pie dish, and refrigerate it. Also, the refrigeration step is important, so please don’t skip it.
  • After that, you whisk together the filling ingredients and add the mixture to the prepared crust.
  • Bake, cool, chill and serve. You are done!

What is the difference between Key Lime and regular Persian Lime?

Key limes are smaller and contain more seeds than Persian limes. Persian limes have a thick, vividly green skin, while key lime skin is thin and yellowish. The Key Limes are harder to find, not all the grocery stores carry them, but regular limes are just as good in this recipe.

Can you substitute Key Lime Juice with Lime Juice?

Yes, you can. You can only use Lime Juice, the pie will taste great or you can mix of 1/4 cup fresh lemon juice and 1/2 cup fresh lime juice.

How do you store Key Lime Pie?

Freshly baked pie can be kept in the fridge for about 3 to 4 days, cover it loosely with aluminum foil or plastic wrap.

How long can Key Lime Pie be left at room temperature safely?

Bacteria grow rapidly at temperatures between 40 °F and 140 °F. Therefore it is best to discarded if left out for more than 2 hours at room temperature.

Can you freeze this Pie?

Yes. To freeze, do not top the pie with whipped cream, and make sure the pie is not warm. Wrap it tightly with aluminum foil or plastic freezer wrap, or place in a heavy-duty freezer bag. Properly stored, it will maintain the best quality for about 1 to 2 months but will remain safe beyond that time.

Recipe Tips and Tricks:

  • Also, you can use either fresh or bottled key lime juice in this recipe.
  • For best result and texture, it is recommended to chill the pie in the refrigerator for at least 6 hours prior to serving. However, it is even better to make it the night before and allow it to chill overnight.

Watch Recipe Video:

Homemade Key Lime Pie from scratch

Easy Homemade Key Lime Pie

Homemade Key Lime Pie recipe from scratch with lots of lime zest and fresh lime juice for a fresh citrusy flavor with the most amazing creamy texture.
4.95 from 19 votes
Save Print Pin Rate
Prep Time: 15 minutes
Cook Time: 15 minutes
Chill Crust: 30 minutes
Total Time: 1 hour
Servings: 10 slices
Calories: 324kcal
Author: Catalina Castravet


For the Crust:

  • 1 cup graham cracker crumbs
  • 1/2 cup ground walnuts ( (pecans, almonds or macadamia nuts work as well, if you are allergic, just use extra 1/2 cup graham cracker crumbs))
  • 3 tablespoons white granulated sugar
  • 5 tablespoons unsalted butter (melted)

For the Filling:

  • 2 cans (14-ounces each sweetened condensed milk)
  • 1/2 cup sour cream
  • 3 large egg yolks
  • Zest of 1 large key lime or lime
  • 1/2 cup key lime juice or lime juice (from about 8 limes)

Whipped Cream:

  • 1 1/2 cup heavy whipping cream (full fat and cold)
  • 2 tablespoons white granulated sugar
  • 1 teaspoon vanilla extract


  • Whipped cream
  • (Key) Lime zest
  • (Key) Lime slices


Make the Crust:

  • In a medium bowl, using a fork, stir together the crust ingredients until fully combined and graham cracker crumbs are moist.
  • Press the mixture into a 9-inch pie dish. Using your hands or a measuring cup, press and pat down the bottom and sides.
  • Chill for 20-30 minutes. I prefer to put it in the freezer for 20 minutes.

Make the Filling:

  • Preheat the oven to 350 degrees F.
  • In a medium bowl, combine condensed milk, sour cream and egg yolks. Whisk together on medium speed until fully combined.
  • Add in (key) lime juice, and (key) lime zest. Whisk until fully combined.
  • Pour the mixture into the prepared crust.


  • Bake for 15-17 minutes into the preheated oven. Do NOT brown the pie, only the crust should start turning a nice golden-brown color.


  • Remove from oven and cool on a cooling rack. When cool, transfer it to the fridge. Chill pie thoroughly in the fridge for 3-4 hours before serving.
  • Serve cold and do not keep at room temperature for more than one hour.

Whipped Cream:

  • In a large bowl, beat heavy cream, sugar, and vanilla extract until stiff peaks form.
  • Add the whipped cream to a piping bag fitted with a star tip and pipe it on top of the pie or just use a spatula to spread it onto the pie.


  • Garnish with (key) lime slices, (key) lime zest and whipped cream if desired.



Serving: 0g | Calories: 324kcal | Carbohydrates: 16g | Protein: 3g | Fat: 28g | Saturated Fat: 14g | Cholesterol: 148mg | Sodium: 82mg | Potassium: 112mg | Fiber: 0g | Sugar: 8g | Vitamin A: 885IU | Vitamin C: 5.8mg | Calcium: 62mg | Iron: 0.7mg
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Catalina! This pie was EVERYTHING!!! Key lime pie is my favorite dessert of all time! I initially made your original version using the sour cream. The next time I made it, I used 8oz of cream cheese and added 3 TBSP of lime zest to the filling just to experiment with the texture. Your original version and the tweaked versions were wonderful. But my family and I had a preference for one with the cream cheese. We chilled it for 6h before indulging in this amazing recipe. Thank you so much for sharing! It's a life changer because it's the only key lime pie we'll eat from know on :)


Thank you Stacy for your comment! Really happy you loved it!



This is a great key lime pie recipe. The crust was perfect & stayed together with slicing. Key lime pie has a nice thick filling. I will keep this one!



This looks so good! Thanks for explaining the difference between the limes! Very helpful!



Thanks for sharing! How far ahead of time can I make it?


Joan Yeager

Best Key Lime Pie ever! My family loves it so much they insist that I make two so they don’t fight over any left-overs!



Delicious. A little time consuming but easy and worth it



This by all means is the recipe you want. So delicious and the best key lime pie we've ever had. No reason to try any other. No adjustments to the recipe, it is simply perfect!


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