1 (12 oz.) Mozzarella cheese
1 (8 oz.) bag nacho cheese Doritos
1 lg. can chili mix
1 reg. can tomatoes
1 lb. ground beef

Brown hamburger. Drain then add chili mix, tomatoes and 1/2 bag of cheese. Layer half of crushed taco chips on bottom of large casserole. Add hamburger mixture. Sprinkle cheese over top. Bake at 350 degrees for 30 to 45 minutes until bubbling around edges. Sprinkle remaining taco chips on top and place in oven and bake 5 to 10 minutes longer until slightly brown.