3 med. onions, sliced
2 tbsp. butter
3 c. beef or chicken broth
Parmesan cheese

Saute onions in butter until tender. Add broth and simmer 30 minutes. Pour soup in bowls over rounds of toast or French bread. Sprinkle Parmesan cheese on top. (Mozzarella cheese may be used in place of Parmesan. Pour soup into oven-proof bowls. Cover bowls with slices of cheese. Place under broiler until cheese turns golden.)