1-2 c Oil for cooking corn tortillas Brown hamburger and 1 chopped onion (add 2 cloves garlic, chopped, if desired) and drain. Add tomatoes, crushed, kidney beans and spices. Simmer. Heat oil, and cook tortillas to desired degree. (Soft seems to work best) Drain on paper towels. Put 1 tortilla on plate, spoon "sauce" over it and sprinkle some of raw onion and cheese on sauce. Put on another tortilla and repeat untill large enough for you. Stop with layer of onion and cheese.