Football Field Cake Ingredients: 1 Sara Lee Chocolate Sheet Cake, thawed 2 Cups Coconut Green Food Coloring 1 Cup White Frosting 4 – 1.3 oz bars Rice Krispie Treats Directions: Place the coconut in a plastic container and add a few drops of green food coloring to the side of the container. Cover the container and shake the coconut. Repeat until the coconut has reached a desired level of green. Then sprinkle the coconut generously over the cake. Fill a plastic sandwich bag (or piping bag if you have it) with the white icing. If using a plastic sandwich bag, cut a small corner at one of the tips of the bag. Then, pipe the yard lines and end zones onto the cake. Form Rice Krispie Treats into two goal posts. If needed, use toothpicks to secure the posts together.