5-Ingredient Tortellini Soup

Bahan-bahan (4 porsi)

• 4 cups chicken or vegetable broth
• 2 (28 oz.) cans diced tomatoes
• 1 (20 oz.) bag pre-cooked frozen cheese tortellini (or any kind of tortellini)
• 1 small white onion, diced
• 1 Tbsp . Italian seasoning, store-bought or homemade
• (optional topping: freshly-grated Parmesan cheese)