Burrito Bake

Adapted from Rosarita.

4 burrito-size flour tortillas
1 can red enchilada sauce (or green, if you prefer, we like red)
1 can refried beans
shredded cheddar cheese
1/2 lb hamburger
chopped onion

Brown hamburger and onions together and set aside. Spray an 8x8 pan with cooking spray and spoon in enchilada sauce to cover the bottom of the pan. Generously spread one tortilla with a thick layer of refried beans and place in pan (beans side up). Top with 1/3 of the hamburger-onion mixture, about 1/4 of the remaining enchilada sauce, and a layer of cheese. Repeat twice more, making 3 layers and using all of the meat. Spread remaining tortilla with beans and place on top, beans side down. Cover top of tortilla with remaining sauce and cheese. Bake at 400°F for 15-20 minutes, until cheese is melted and casserole is bubbly. Let cool for 15 minutes, then slice and serve with sour cream, lettuce, guacamole, and other cool garnishes.