Mix together the 1 cup of melted butter and the 2 cups of sugar in a large bowl.

In a separate bowl mix all the dry ingredients except the Cocoa Puffs.

Combine the butter mixture with the dry ingredients and till they mixed together. Fold in 1 ½ Cups Cocoa puffs into the brownie mixture.

Bake at 350 degrees for 30 minutes.

After the brownies have cooled, frost with the chocolate frosting and top with the remaining ½ cup of Cocoa Puffs.