Fritos Casserole 1 pound ground beef 1 can Campbell's tomato soup 2 cans chili with beans 1 medium onion, chopped 1 package Fritos 1 package sharp Cheddar cheese, shredded Brown beef and onions. Drain. Add soup and chili to beef. Simmer 10 minutes. Line bottom of 9 x 13-inch pan with Fritos. Pour mixture into pan. Cover top of mixture with Fritos and cheese. Bake at 350 degrees F for 20 minutes, or until cheese is golden brown.