This pie is a classic dessert that never fails to impress. Its unique combination of tart and sweet flavors makes it a refreshing treat and the quick make-ahead recipe gives it an edge over others for potlucks and parties.
Pulse vanilla wafers in a food processor to fine crumbs. After you've crushed them, measure 1 and 1/2 cups of the crumbs. I start with 2 cups of whole wafers, then add a little if I need to. (If you don't have a food processor, put the wafers in a plastic zip-top bag and pound them with a meat mallet or rolling pin.)
Melt the butter in a microwave-safe bowl. Pour the crushed wafers into the bowl with melted butter and stir with a fork until all the crushed wafers are coated with butter.
Pour the mixture into your pie plate. Using the bottom of a flat glass, tap and press the crumbs into the pie plate's bottom and sides. You'll want to compact them enough that they stay together.
Place the crust in the oven for 10 minutes as it preheats to 350℉. You're not trying to toast the crust, but this helps to set it and makes it firmer.
key lime pie
Combine the sweetened condensed milk, room-temperature egg yolks, and evaporated milk in the bowl of a stand mixer. Blend until smooth.
Add the key lime juice and zest and blend. The mixture will begin to thicken slightly.
Pour filling into pie crust and bake at 325º for 15 minutes.
Allow it to cool for at least 10 minutes before refrigerating. If you have time, allow it to cool completely before refrigerating. When you refrigerate, cover it with foil or place it in an airtight container to prevent it from absorbing any refrigerant odor.
Before serving, top with freshly whipped cream, Cool whip, or meringue and garnish with lime slices.
Notes
You can use the egg whites to make meringue. I prefer to use Cool Whip.
*You can use a store-bought vanilla wafer crust or graham cracker crust.