Preheat and Prep the Crust
Preheat oven to 350°F. Roll out the pie crust, cut into small circles, and fit them into a mini muffin pan. Bake for 8–10 minutes until golden.
Prepare Lemon Filling
Combine lemon juice, zest, sugar, and butter in a saucepan over medium heat. Stir until butter is melted. In a separate bowl, whisk egg yolks, then add to the lemon mixture, stirring continuously until it thickens. Set aside to cool.
Whip the Meringue
Beat egg whites until soft peaks form, then add sugar gradually, whipping until stiff peaks form.
Assemble
Spoon lemon filling into each crust, then top with meringue. Bake for 5–7 minutes until meringue is lightly browned.
Cool and Serve
Let the bites cool slightly before serving.