Creamy Burrito Casserole

Yes, it's super easy and yes, it tastes just like a burrito.  Actually, I think it tastes better than a burrito. :)  Enjoy!
-1 lb extra lean ground beef
-1/2 medium onion, finely diced
-1 package taco seasoning
-1 (16 oz) can refried beans
-1 (10 3/4 oz) can cream of mushroom soup
-1/2 cup sour cream
-8 (7 inch) flour tortillas
-3 cups shredded taco cheese or cheddar cheese
Preheat oven to 350 F.
Brown the ground beef with the onion. Add the taco seasoning.  Stir well.  Add the beans and stir until well combined.  Remove from stove.
Mix the soup with the sour cream.  Spread half of that on bottom of 9x13 casserole dish.  Tear 4 tortillas and layer them on top of soup mixture.  Top that with half the meat mixture.  Sprinkle half the cheese on top.  Repeat layers: soup mix, torn tortillas, meat mix and cheese.
Bake in preheated oven for 25-30 minutes.  Enjoy!