Brown hamburger, onion, and green peppers.
Add taco seasoning.
Cut tortillas in small bite-sized pieces.
Mix sour cream and cream of mushroom soup together.
In a 9 X 13 inch pan layer hamburger mixture, tortillas and sour cream mixture and layers. Top with the cheese.
Bake at 350 for 30 minutes. Toppings can be chopped tomatoes, lettuce,salsa, and ranch dressing