Tangy, creamy Key lime pie with a graham cracker crust is a refreshing Florida classic. This beloved dessert balances tart citrus with sweet, silky filling for the whole family.
Preheat the oven to 350°F. Mix graham cracker crumbs, sugar, and melted butter in a bowl until well combined; press the mixture firmly into the bottom and up the sides of a 9-inch pie pan.
Bake the crust for 8 minutes until lightly golden, then set aside to cool for at least 15 minutes before filling.
Whisk together sweetened condensed milk, egg yolks, Key lime juice, salt, and lime zest in a large bowl until the mixture is fully combined and smooth.
Pour the filling into the cooled crust and bake at 350°F for 15 minutes, just until the center is set but still slightly wobbly; avoid overbaking for creamy texture.
Cool pie at room temperature for 30 minutes, then refrigerate at least 2 hours before topping with whipped cream and serving chilled.