1 1/2 lb. hamburger
1 medium onion, chopped
2 (6 oz.) cans tomato paste
2/3 c. water
1 (4 oz.) can mushrooms
1/2 tsp. oregano
1 (6 oz.) pkg. broken vermicelli
1/4 c. melted butter
1 c. shredded Cheddar cheese
1 c. shredded Mozzarella cheese

Brown hamburger and drain well. Add onion, tomato paste, water, mushrooms and oregano. Cook vermicelli; drain and toss with melted butter. Combine vermicelli, meat mixture and the Cheddar cheese. Stir well until blended. Pour into 2 1/2 quart casserole dish. Top with Mozzarella cheese. Bake at 350° for 30 minutes. Serves 6.