Step 1

Heat the oil in a large soup pot over medium-high heat. Add the onion and cook until it's translucent, about 3 minutes. Add the garlic and Italian seasoning and cook for 1 minute.

Step 2

Push the onions to the side of the pot and add the tomato paste to the center. Let it cook for 3 minutes, or until it begins to smell sweet. Add the diced tomatoes and stock to the pot and scrape any stuck-on bits off the bottom of the pot. Season to taste with salt.

Step 3

Bring the pot to a boil then add the tortellini and let it cook for 6 minutes.

Step 4

Mix the cashew butter and water together then add it to the pot. Let it thicken the soup. Taste and season (if needed) with a little more salt and pepper. Stir the spinach into the soup.