1. Preheat the oven to 350°F and line a 9×13-inch baking pan with parchment paper. Lightly grease the parchment.

2. Whisk melted butter, granulated sugar, and brown sugar in a large bowl until smooth.

3. Add eggs and vanilla extract, then whisk until thick and fully combined.

4. Sift in cocoa powder, flour, and salt. Stir gently until no dry streaks remain.

5. Fold in the chocolate chips.

6. Spread the batter evenly into the prepared pan.

7. Bake for 24 to 28 minutes, or until the edges are set and a toothpick comes out with moist crumbs.

8. Cool completely, then chill for 30 minutes for cleaner cutting.

9. Lift the brownies from the pan and cut into football shapes using a cutter or sharp knife.

10. Pipe white icing lines and laces onto each brownie.

11. Let the icing set for 10 to 15 minutes before serving.