Cheesy Enchilada Casserole

1 lb ground beef
1 onion, chopped
2 1/2 cups salsa
1 can black beans {drained}
1/4 cup italian dressing
2 T taco seasoning
1/4 t cumin
tortilla {corn or flour}
3/4 C sour cream
2 C shredded cheese
lettuce and tomato
*cilantro if desired

• In a large skillet, cook beef and onion.
• Stir in the salsa, beans, dressing, sour cream, taco seasoning and cumin.
• Spoon a generous layer of meat mixture on bottom of 2 quart baking dish.
  
• Sprinkle with grated cheese.
• Place a flour or corn tortilla on top of meat mixture. Layer with half of the meat mixture, and cheese. Repeat as many layers as you like.
• The last & final layer should be a healthy dose of grated cheese.
• Cover with foil that has been sprayed with pam or other and bake at 400° for 25 minutes, or until hot & bubbly.
• Let stand for 5 minutes before topping with lettuce and tomato.