2 lbs. hamburger
2/3 c. evaporated milk
1 green pepper, chopped
1 med. onion, chopped
1 tsp. garlic salt
1/2 c. dry bread crumbs

Mix and spread in bottom of flat baking dish.

Top with following: 1/4 c. grated Parmesan cheese 1/2 lb. or 1 c. Mozzarella cheese 1 (8 oz.) can mushrooms

Sprinkle with oregano. Bake 350 degrees, 45-50 minutes.