Start by preheating the oven to 350 degrees Fahrenheit.
Mix together graham cracker crumbs, sugar, and melted butter in a bowl.
Press the mixture into a 9-inch pie dish and bake for 10 minutes.
In a separate bowl, whisk together condensed milk, egg yolks, lemon juice, and lemon zest.
Pour the mixture into the pie crust and bake for an additional 15 minutes.
Let the pie cool before serving and garnish with whipped cream and lemon slices.
Enjoy the world's best lemon pie!