I made this cake for our favorite football team, and my employer, Notre Dame!
The first step is to make a 13 x 9 cake of your choosing.
Next, mix up some rice cereal treats. I'd recommend using, and plan to next time, Fruity Pebbles. That way you won't need to paint them with food coloring later on.
You'll next need to color some frosting green for the field.
Frost your cake, then use a fork to gently pull up some grass on the field.
You can then use the rice cereal you mixed up to form angled "walls" around your cake. These will represent the fans in the stands. Push hard on the rice cereal to get it to stick together and then use a large knife to cut straight lines on the outside edges. You can use frosting like glue to attach the rice cereal to the cake. Next pipe some simple white lines on the field.
You'll then need to roll out some fondant for the outer walls of the stadium.
Again, use plenty of frosting like glue to carefully attach the fondant walls to the stands.
If your fondant walls crack, use some food shortening to smooth them out.
I used a sponge and some black food coloring to dab on the fondant, giving it a stone-like look.
I then painted the rice crispies with food coloring to look like little fans, then formed a football out of a chocolate tootsie roll and placed it on a plastic toothpick.
Fo the ND symbol, I rolled out another piece of fondant, cut it into a square, and used a food paint brush to paint on the letters.
I used some more fondant to make little field goals, attached my ND logo with some frosting, piped on a couple encouraging words and we were ready to party!