Easy Key Lime Pie Recipe

This pie recipe is made with only six ingredients, including sweetened condensed milk to make a smooth and creamy filling. Bake in a homemade graham cracker crust to create this easy key lime pie that is zesty and delicious!

A large slice of key lime pie sitting on a white plate with lime zest on top.

You can’t go wrong with homemade pie! Haley here from If You Give a Blonde a Kitchen. This classic pie is a refreshing dessert to make for friends and family. It’s made with only six ingredients and no eggs.

A whole key lime pie sits on a blue napkin on a white background.

Fresh lime juice is the key to the best pie. Yes, it requires a little extra work, but fresh lime juice creates the best flavor.

What is the difference between a lime and a key lime?

Key limes contain more concentrated aromatic juices, which gives the pie more flavor. They are also more yellow and smaller than regular limes.

Because key limes are small, this recipe calls for a lot of them. I use around 50 key limes to make 3/4 fresh squeezed juice. Use a citrus squeezer to make the process quick and easy. You can use regular limes in place of key limes but it won’t taste like an authentic key lime pie. Substitute the same amount juice for regular time juice.

A glass bowl with graham crackers and butter to make key lime pie crust.

The classic recipe includes a homemade graham cracker pie crust! The buttery sweetness and crunchy texture compliments the citrus filling perfectly. The pie crust only requires three ingredients (graham crackers, sugar and melted butter) with the remaining three ingredients for the pie filling (condensed milk, sour cream, limes).

Mixing key lime pie filling in a glass bowl with a spatula.

Tips for making

  • This pie should be refrigerated. Keep it for up to 3 days in the refrigerator. Cover loosely with aluminum foil or plastic wrap.
  • Use a store-bought graham cracker pie crust to save time.
  • Try to use key limes for authentic color and flavor. Fresh limes are preferred but you can use store bought lime juice if needed.
  • This recipe does not use eggs. The recipe sets by baking and then chilling in the refrigerator for at least 4 hours. Do not skip the chilling.
  • Serve the pie with whipped cream or meringue.
  • Garnish with additional lime zest for more color and flavor.

A slice of key lime pie with a fork on a plate.

Other classic pie recipes

Pie is a classic dessert that works well any time of the year. A few ingredients create a rich dessert packed with lots of flavor. Impress your friends and family with this easy dessert that everyone loves.

Try it and let us know what you think!

6-ingredient Classic Key lime pie is made with only six ingredients, including sweetened condensed milk to make a smooth and creamy filling. Baked in a graham cracker crust, each bite is sweet, zesty and delicious!

Easy Key Lime Pie

Yield: 12 servings
Prep Time: 5 hours
Cook Time: 15 minutes
Total Time: 5 hours 15 minutes
This pie is made with only six ingredients, including sweetened condensed milk to make a smooth and creamy filling.
5 from 28 votes


For the Graham Cracker Crust:

  • 1 1/2 cups (127 g or 7 graham crackers) finely ground graham cracker crumbs
  • 1/3 cup white sugar
  • 6 tablespoons butter, melted

For the Pie:

  • 2 1/2 cups sweetened condensed milk, (about two 14 ounce cans)
  • 3/4 cup sour cream
  • 3/4 cup key lime juice¹
  • 1 tablespoon grated lime zest
  • Whipped cream for garnish, (optional)


To make the Graham Cracker Crust:

  • In a medium bowl, stir together graham cracker crumbs, sugar and melted butter until well combined. Press mixture into a 9-inch pie plate. Bake at 375° F for 7 minutes. Cool completely.

To make the Pie:

  • Preheat oven to 350°F.
  • In a medium bowl, combine condensed milk, sour cream, lime juice and zest. Mix well and pour into baked graham cracker crust. Tap pie plate gently on the counter to release any air bubbles.
  • Bake in preheated oven for 5 to 8 minutes, until the filling is set and barely jiggles. Do not brown. Allow pie to cool to room temperature. Chill pie thoroughly (at least 4 hours) before serving. Garnish with lime slices or zest and whipped cream if desired.



  1. For the best flavor, juice your own key limes or buy a bottle of key lime juice from the store. It is usually located with the regular lime juice and lemon juice. The Nellie & Joe’s key lime juice brand is the one I like.
  • Keep it for up to 3 days in the refrigerator. Cover loosely with aluminum foil or plastic wrap.
Recipe from Haley at If You Give a Blonde a Kitchen


Serving: 1slice, Calories: 356kcal, Carbohydrates: 51g, Protein: 6g, Fat: 15g, Saturated Fat: 9g, Cholesterol: 44mg, Sodium: 212mg, Potassium: 293mg, Fiber: 1g, Sugar: 44g, Vitamin A: 442IU, Vitamin C: 6mg, Calcium: 209mg, Iron: 1mg
Course: Dessert
Cuisine: American
Author: Ashley C.
If you try this recipe, don’t forget to leave a review below or share a photo and tag @spoonfulofflavor on Instagram.

Recipe originally published June 2017, updated July 2020.

41 comments on “Easy Key Lime Pie Recipe”

  1. Do you have to let it cool before putting it in the refrigerator or do you put in the refrigerator as soon as you remove it from the oven?

  2. Simply easy and devine, this is enough to make 2 pies.

  3. Easy, creamy, and just tart enough! I let it sit for a day in the fridge and that only enhanced the flavors. Our stors in the north do not carry key limes, but they do carry key lime juce in a bottle! Tasted fabulous! This recipe is definitely a keeper.

  4. “Easy as pie” this is so far the best pie. I did substitute Meyers lemons because that is what is fresh in south Louisiana at the moment. Sooo good, I always worry if a dessert is going to be lemony enough, I used the exact measurements and it was perfect. Big hit with the lemon snobs in my household, both their eyes got real big on the first bite. I may even try a satsuma version. Thank you for this recipe.

  5. Easy and really delicious. 

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