In a large bowl, mix up the brownie mixes according to the package instructions. Pour brownie batter into a 13" x 9" baking pan lined with a large piece of parchment paper that over hangs. Sprinkle chocolate chips on top. Bake brownies for 40 minutes at 350°F. Let cool and cut into football shapes using a 3" football shaped cookie cutter. You should be able to get about 14-16 football shaped brownies from this batch. Store scraps in an airtight container and use as you wish.
Use your favorite store bought chocolate frosting. Frost the football shaped brownies just on the tops.
For the white icing
Make a small batch of homemade buttercream frosting (or use store bought vanilla frosting, if desired). Place butter, sugar, heavy cream and vanilla in a bowl and beat until creamy. Pour into a pastry bag or ziploc bag and cut the corner to make a small round hole for piping. (Or use a small round tip such as a #5 pastry tip.) To pipe laces, pipe a straight line across the top middle portion of the football. Then make three lines across to form the football laces.
Serve immediately. Store them covered at room temperature for 24 hours or in the refrigerator for up to 3 days.
Notes
What if I don’t have a football-shaped cookie cutter? You can easily cut the brownies into the shape of a football freehand using a sharp knife. Draw an oval outline on parchment paper as a guide.How can I prevent the brownies from sticking to the pan? Line your baking pan with parchment paper or aluminum foil, leaving some overhanging on the sides. This makes it easy to lift the brownies out and prevents sticking.