Preheat your oven to 350°F (175°C).
In a large bowl, whisk together the melted butter, granulated sugar, and brown sugar until combined.
Add the eggs and vanilla extract, whisking until smooth.
Sift in the flour and cocoa powder, mixing until just combined.
Fold in the chocolate chips gently until evenly distributed.
Roll out the pie crust on a lightly floured surface and cut it into rectangles (about 4 inches by 6 inches).
Spoon a generous amount of brownie batter onto the center of each pie crust rectangle.
Carefully roll the pie crust around the batter, sealing the edges as you go to prevent leakage.
Place the rolls seam-side down on a greased baking sheet, spacing them evenly.
Bake in the preheated oven for 20-25 minutes, or until the tops are set but still slightly soft to the touch.
Let the rolls cool slightly before dusting with powdered sugar and serving.
