Pizza Soup

1/2 c. onion
1 t. oil
2 c. water
15 oz. pizza sauce
1 c. pepperoni
1 c. tomatoes
8 oz. Italian sausage
1/4 t. Italian seasoning
1/4 c. parmesan cheese
shredded mozzarella
any other pizza topping you like

Saute onion and any vegetables in oil. Add remaining ingredients except cheeses. Simmer 20 minutes. Stir in parmesan cheese just before serving. Sprinkle each bowl with mozzarella. Great with bread sticks.