Boot Kickin' Tortilla Casserole

Source: Kelly Falsey for Beef Week 1997, Winner in Stews and Casseroles Division

1 tri-tip, cooked in crockpot
1 large onion
Garlic, however much desired
Chili powder, however much desired
1 can tomato sauce
1 can El Pato Sauce
1 can diced green chiles
1 dozen corn tortillas
1 cup small curd cottage cheese
1 egg
1/2 pound jack cheese
1 cup marble cheese
Sour cream, for garnish
Slivered green onions, for garnish
Chopped tomatoes, for garnish

Saut