Enchilada Casserole

1lb ground beef
1 lg onion, chopped
2 cups salsa
1 can (15oz) black beans, rinsed and drained
1/4 cup Italian dressing
2T taco seasoning
1/4 tsp. ground cumin
6 flour tortillas
3/4 cup sour cream
1 cup Mexican shredded cheese
1 cup shredded lettuce
1 medium tomato, chopped
1/4 minced cilantro

In a large skillet, cook beef and onion over med heat until no longer pink,
drain. Stir in salsa, beans, dressing, taco seasoning and cumin. Place 3
tortillas in 2-qt baking dish coated with cooking spray. Layer half of the
meat mixture, sour cream and cheese. Repeat layers. Cover and bake at 400
for 25 min. Uncover, bake 5-10 min longer until heated thru. Let stand for 5
min before topping with lettuce, tomato and cilantro.