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A vibrant green key lime pie with whipped cream topping

Classic Key Lime Pie

A delightful and tangy Classic Key Lime Pie featuring a golden graham cracker crust and a smooth, zesty Key lime filling. Perfect for any occasion, this pie is sure to be a crowd-pleaser.
Prep Time 25 minutes
Cook Time 30 minutes
Total Time 5 hours
Servings 8 slices
Calories 450 kcal

Equipment

  • oven
  • medium bowl
  • 9-inch pie plate
  • large bowl
  • whisk
  • wire rack

Ingredients
  

For the Crust:

  • 1 ½ cups graham cracker crumbs
  • ¼ cup granulated sugar
  • ½ teaspoon ground cinnamon
  • 6 tablespoons unsalted butter, melted

For the Filling:

  • 14 ounces sweetened condensed milk
  • ½ cup Key lime juice freshly squeezed is best
  • 4 large egg yolks
  • 1 tablespoon lime zest from about 2-3 Key limes, or 1 regular lime for garnish

For Serving (Optional):

  • Whipped cream
  • Additional lime zest or thin lime slices

Instructions
 

Prepare the Crust

  • Preheat your oven to 350°F (175°C), then combine graham cracker crumbs, sugar, and cinnamon in a bowl. Add melted butter and stir until moist. Press into a 9-inch pie plate and bake for 8-10 minutes until lightly golden; cool slightly.

Make the Filling

  • In a large bowl, whisk together the sweetened condensed milk, Key lime juice, and egg yolks until smooth and thoroughly combined.

Assemble and Bake

  • Pour the prepared Key lime filling into the pre-baked graham cracker crust and return it to the oven.

Bake the Pie

  • Bake for 15-20 minutes until the edges are set and the center slightly jiggles; avoid overbaking to prevent a tough filling.

Cool and Chill

  • Remove the pie from the oven and cool completely on a wire rack, then refrigerate for at least 3-4 hours, or preferably overnight, to allow it to set and develop flavor before serving.

Notes

For the best flavor, use fresh Key lime juice. If Key limes are unavailable, you can use regular lime juice, but the flavor will be slightly different. For a perfectly set pie, ensure adequate chilling time.