1 lb. ground beef
1 onion, chopped
1 tsp. salt
1 1/2 tsp. chili powder
8 oz. tomato sauce
6 tortilla shells (spread with butter)
1 1/2 c. sharp Cheddar cheese, grated
1 c. water
1/2 tsp. pepper

Brown beef and onions; add seasonings and tomato sauce. In a casserole dish, alternate layers of tortillas, meat sauce and cheese. Add water; cover tightly and bake at 400°F for 20 minutes. Do not freeze.