Preheat your oven to 350°F (175°C). Place the par-baked pie crust in a 9-inch pie dish.

In a bowl, whisk together melted butter, sugar, and cocoa powder. Add eggs one at a time, whisking after each addition.

Stir in flour, vanilla extract, and salt until fully combined and smooth.

Pour the mixture into the pre-baked pie crust and spread evenly.

Bake for 25–30 minutes, or until the top is set but the center remains fudgy.

Let cool slightly before serving warm with vanilla ice cream or whipped cream.