Key Lime Pie

Tart and very flavorful!

Ingredients:
1 premade graham cracker crust (in the baking section of the grocery store)
4 tsp. grated lime zest (regular limes work just fine for this recipe)
1/2 cup lime juice
4 large egg yolks
1 can sweetened condensed milk

topping:
3/4 cup heavy whipping cream
1/4 cup powdered sugar

Directions:
Whisk the lime zest and egg yolks in a small bowl. Whisk in the milk, then the juice. Set aside for 30 minutes to thicken. preheat the oven to 325 degrees. Pour the filling into the crust, and bake for 15-17 minutes. Refrigerate until cool.
For the topping, beat the cream, adding the powdered sugar gradually, until soft peaks form. Spread the whipped cream over the top of the cooled pie. Make sure that the pie is completely cooled before adding the topping.

From: Baking Illustrated: A Best Recipe Classic.Brookline, Mass.: America's Test Kitchen, 2004, pages 208-209