The casserole contains ground meat and melted cheese on a bed of yellow ingredient, possibly mashed potatoes or squash. The rest of the casserole is in a glass dish in the background.

The next morning, bake the casserole at 350° for about 45 minutes. It's a classic, easy combination but it's also so satisfying. It's also the kind of recipe that you can easily make your own.

According to recipe developer Nicole Hopper, "The base of this rainbow sheet cake is a super simple vanilla cake that is ...