Ok, I've got one more to share. I love ones that don't take a lot of work, so here goes:
Mexican Casserole

Brown and drain:
1 pound lean groundbeef
1/c cup chopped onion

Layer, in order given, amounts of the following ingredients to cover a 9x12x3 baking dish:
Fritos or tortilla chips
Chili, with or without beans, your choice
Cheese, shredded
Browned groundbeef and onion mixture
More Cheese shredded

Bake at 375 degrees until cheese is melted.