Brown 1 onion and 1 bell pepper in 3 tablespoons oil. Add 3 tablespoons flour, 3 tablespoons chili powder and 1 teaspoon salt. Simmer 1 can stewed tomatoes and 1 can beans for 30 minutes.

Brown 1 pound hamburger meat. Line baking dish with Doritos. Pour meat on Doritos. Pour above mixture on meat. Sprinkle grated cheese on top. Bake until melted (15-20 minutes).