1 1/2 lbs. hamburger
1 pkg. Doritos (crushed - put 1/2 in bottom of pan; rest on top)
1 can mushroom soup
1 can cream of chicken soup
1 jar taco sauce
1 can Rotel tomatoes
1 can Ranch style beans
1 sm. can evaporated milk

Brown hamburger. Mix ingredients together. Cover with sliced American cheese (1 layer thick), one package Mozzarella cheese over the top. Top with rest of chips. Bake at 350 degrees for 45 minutes to 1 hour.