Mexican Casserole - cooking recipe

Ingredients

1 lb. cooked beef, drained
1 large chopped onion
1 can Ranch Style beans
1 layer grated cheese
1 can mushroom soup
1 can Ro-Tel tomatoes and green chilies
1/4 can water or more if wanted

Preparation

Line dish sparingly with broken corn tortillas.
Layer ingredients.
Bake covered at 350\u00b0 for 40 minutes.