Follow these simple steps to create your Healthy Zucchini Tomato Italian Sausage Soup:

1. Brown the Sausage: In a large pot, heat the pot over medium heat. Add the Italian sausage, breaking it apart with a spoon, and cook until browned. This should take about 5-7 minutes.
2. Sauté the Vegetables: Add the chopped onion and minced garlic to the pot. Sauté until the onion becomes translucent, approximately 3-4 minutes.
3. Add Zucchini: Stir in the diced zucchini and cook for another 3-4 minutes until they start to soften.
4. Incorporate the Tomatoes: Pour in the diced tomatoes with their juice and the tomato sauce. Mix well.
5. Add Broth and Seasonings: Pour in the broth and add the oregano, basil, salt, and pepper. Stir to combine everything.
6. Simmer: Bring the soup to a boil, then reduce the heat to low. Let it simmer uncovered for about 20 minutes, allowing the flavors to meld.
7. Add Spinach (Optional): If using spinach, stir it in during the last few minutes of cooking until wilted.
8. Taste and Adjust: Before serving, taste the soup and adjust the seasoning if necessary.
9. Serve: Ladle the soup into bowls and sprinkle with grated Parmesan cheese if desired.

These steps will guide you through the process of making this wonderful soup effortlessly. You’ll soon find it’s not just a meal but a warm embrace on a chilly day.