Firecracker Casserole

2 pounds ground beef 
1 medium onion, chopped
1 can black beans, rinsed and  drained
1-2 tablespoons chili powder
1/2 teaspoon salt
4 (8-inch) flour tortillas
1 can mushroom soup
1 can Ro-Tel, undrained
1 cup Cheddar cheese,  shredded
 
In a skillet, cook the hamburger  meat and onion, drain. Add beans, chili powder and salt. Transfer to a greased  baking dish. Arrange the tortillas on top.
 
Combine the soup and Ro-Tel and  pour on top of the tortillas. Sprinkle with cheese. Bake uncovered at 350  degrees F for 25 to 30 minutes.   Enjoy.