01 - Preheat the oven to 350°F.
02 - In a medium bowl, combine graham cracker crumbs, sugar, and melted butter. Mix until evenly moistened and crumbly.
03 - Press the mixture firmly into the bottom and up the sides of a 9-inch pie dish, creating an even layer.
04 - Bake the crust for 8 minutes. Remove from oven and let cool slightly.
05 - Whisk egg yolks in a separate bowl until slightly thickened. Stir in sweetened condensed milk, lime zest, and lime juice until smooth and creamy.
06 - Pour the filling into the cooled crust and spread evenly.
07 - Bake for 12 minutes, until just set but still slightly wobbly in the center.
08 - Remove from oven and let cool to room temperature.
09 - Refrigerate for at least 2 hours, or until fully chilled and set.
10 - Beat heavy cream, powdered sugar, and vanilla extract with a hand mixer until soft peaks form.
11 - Spread or pipe the whipped cream over the chilled pie just before serving.