Creating the incredible Sausage and Zucchini Skillet is straightforward. Just follow these step-by-step instructions:

1. Heat the Skillet: In a large skillet, heat the olive oil over medium-high heat.
2. Cook the Sausage: Add the Italian sausage to the skillet, breaking it up with a spatula. Cook until browned and fully cooked, typically about 5-7 minutes.
3. Add Onions and Garlic: Once the sausage is browned, add the diced onion and minced garlic to the skillet. Sauté for about 3 minutes, or until the onion becomes translucent.
4. Incorporate Vegetables: Add the sliced zucchini and diced bell pepper (if using) to the skillet. Stir well to combine.
5. Season the Mixture: Sprinkle in the Italian seasoning, red pepper flakes, salt, and pepper. Stir to evenly distribute the spices over the mixture.
6. Sauté Until Tender: Continue cooking for another 5-8 minutes, stirring occasionally, until the zucchini is tender but still crisp.
7. Taste and Adjust: Taste your dish and adjust seasoning according to your preference.
8. Garnish and Serve: Remove from heat and garnish with freshly chopped parsley before serving.

These simple steps will guide you in crafting an amazing Sausage and Zucchini Skillet that your family will rave about.