Preheat your oven to 350°F. Grease a 12-cup muffin tin with nonstick cooking spray.

Prepare the brownie batter according to instructions on the box. Pour evenly into the muffin cups. Bake 15-20 minutes until a cake tester comes out clean.

Cool for at least 10 minutes and remove from the pan. Meanwhile, make the green frosting in a small bowl by mixing the white icing with several drops of green food coloring.

Once cool, create a 1/2-inch depression in each brownie using the end of a whisk. Fill each with about a teaspoon of gold sprinkles. Then pipe frosting onto each cupcake. Serve and enjoy!