White Bean Tortellini Soup

Ingredients

• 9 ounces fresh tortellini
• ½ teaspoon dried oregano
• shaved Parmesan
• kosher salt and freshly-ground black pepper
• 1 tablespoon extra-virgin olive oil
• 1 small yellow onion
• 1 can diced tomatoes
• 3-4 cups fresh baby spinach
• 2 cloves garlic
• 1 can Cannellini or other white beans
• 4 cups low-sodium chicken or vegetable broth