Pepperoni Pizza Soup

INGREDIENTS

• 1 cup grated mozzarella
• 2 1/2 cups prepared tomato-basil-garlic soup
• 1/3 cup diced pepperoni
• 1 cup grated Cheddar
• 2 green onions, sliced
• 1 1/2 cups elbow macaroni (or other short pasta such as ditalini or alphabets)
• 1 1/2 cups water
• 2 cloves garlic, minced
• 2 teaspoons dried oregano, plus more for broiling