Creamy Chicken Sausage, Tomato, and Tortellini Soup

Olive oil

small yellow onion, chopped

garlic, minced

chicken sausage links (I used a garlic and mozzarella variety), sliced

chicken broth

diced tomatoes, undrained

tomato sauce

large zucchini, sliced

frozen tortellini

baby spinach

heavy cream

Parmesan cheese

fresh basil, roughly chopped

fresh parsley, roughly chopped

Salt and Pepper

Additional basil and Parmesan cheese for topping