1 lb. ground chuck
1 medium onion, chopped
2 c. canned tomatoes
1 (10 oz.) can tomatoes and green chilies
1 (8 oz.) can tomato sauce
1 (1/4 oz.) pkg. taco seasoning mix
12 corn tortillas
1 lb. Cheddar cheese, grated

Spray skillet with cooking spray. Brown meat and onion. Add tomatoes, tomatoes and chilies, tomato sauce and taco seasoning mix. Combine thoroughly; simmer 15 minutes. Grease a 9 x 13 baking dish and place 6 tortillas in pan, overlapping if need be. Top each tortilla with 1/2 of meat mixture and 1/2 of cheese. Repeat with tortillas, meat mixture and cheese.

Bake, uncovered, at 350°F for 20 to 25 minutes until bubbly hot and cheese is melted. Good served with a dollop of sour cream. Fresh tomatoes or frozen may be used.