Pizza Soup1 tablespoon olive oil1 medium onion, finely chopped1/2 cup fresh mushrooms, sliced1/4 cup green bell peppers, thinly sliced1 cup stewed tomatoes, undrained1 cup beef stock8 ounces pepperoni, thinly sliced1/2 teaspoon dried basil1/2 teaspoon dried oregano1 dried bay leafSalt and pepper, to taste1 cup mozzarella cheese, shreddedWarm olive oil in a large, deep skillet over medium heat. Sauté onion, mushrooms, and green bell peppers until soft, but not browned. It usually takes about 3 to 5 minutes for the onions to become translucent.Add stewed tomatoes, beef stock, pepperoni, basil, oregano and bay leaf. Continue to warm until the mixture is heated through, making sure to stir occasionally. Discard the bay leaf. Add salt and pepper to taste.Ladle the soup into ovenproof bowls and sprinkle with shredded mozzarella cheese. Microwave until the cheese melts and is bubbly.