Ingredients

1 (9 inch) prepared graham cracker crust
or
1 homemade graham cracker crust (see recipe)

3 cups sweetened condensed milk
1/2 cup sour cream
3/4 cup key lime juice
1 tablespoon grated lime zest

Directions

Preheat oven to 350 degrees F (175 degrees C).

In a medium bowl, combine condensed milk, sour cream, lime juice, and lime rind. Mix well and pour into graham cracker crust.

Bake in preheated oven for 5 to 8 minutes, until tiny pinhole bubbles burst on the surface of pie. DO NOT BROWN!

Chill pie thoroughly before serving. Garnish with lime slices and whipped cream if desired.