Diana's Lazy Enchiladas

1 lb ground beef (or more to your liking)
1 onion
12 corn tortillas (or more to your liking, I use flour and corn)
1 can tomato sauce
1 can red enchilada sauce (i use las palmas 12.9 oz)
Cheese (to your liking)
sliced olives

Brown meat and onions. Tear up tortillas to bite size pieces and heat for a few minutes so they get soft. Add tomato sauce and enchilada sauce. Add cheese and mix. Put in casserole pan add cheese on top and olives and cook for 30 minutes at 350 degrees.
Serve Spanish rice and/or beans on the side. Easy, quick and good! I top with sour cream and sometimes lettuce and tomatos.