Mexican Casserole part 2

I love Mexican food.  Here's another casserole, so fast and easy. 

1 lb ground beef, cooked and drained
1 large can of red enchilada sauce
6 flour tortillas
1 c. shredded cheddar cheese (again, taco flavor is best)
1 small can refried beans
1 4oz can of green chilies (I actually only use about half this)
1 can chili beans

Preheat oven to 400.  Add to cooked ground beef 1/2 c. enchilada sauce and chilies.  Spray 8in casserole dish with cooking spray, drizzle just enough enchilada sauce to cover the bottom of the dish.  Spread refried beans over each tortilla.  Layer in dish - tortilla, meat mixture, beans, and cheese.  Repeat for all layers.  I pour remaining enchilada sauce over it, but that is optional.  I like a little extra cheese on top.  Bake 20-30 minutes until cheese is bubbly and melted.  Serve with sour cream.