Mexican Lasagna

So I made this tonight. I thought it was super and apparently Cara did too since she ate 3 helpings.

1 lb beef
1/2 onion, chopped
4 oz can chopped green chilis
8 oz can tomato sauce
15 oz can refried beans
1 package taco seasoning mix
6 flour tortillas
lots of shredded cheddar cheese

Preheat oven to 350. Brown beef with onion and drain, if necessary. Add chilis, tomato sauce, beans and seasoning and mix well. Spray a 13x9 pan. Lay down 2 tortillas. Spread some meat mixture on top. Top with a few handfuls of cheese. Lay down 2 more torillas, then meat and cheese. Repeat one more time. End with loads (British word for you) of cheese on top. Cook for 30 minutes uncovered. You can top with lettuce, picante sauce, sour cream if you want but I thought it was great just like this.