Deep-Dish Pizza Casserole
["1 lb. hamburger", "1/2 c. chopped onion", "3/4 c. water", "1 1/2 tsp. oregano", "1 c. Cheddar or Mozzarella cheese", "1 (6 oz.) can tomato paste", "1 can (10) biscuits"]
["Cook hamburger and onion. Drain grease. Add water and tomato paste. Simmer 10 minutes. Spread biscuits in dish that is greased to make crust. Pour mixture over biscuits and add cheese. Cook at 350\u00b0 for 20 minutes."]
["hamburger", "onion", "water", "oregano", "Cheddar", "tomato paste"]