Creating One Pot Cheesy Sausage Pasta is an easy and straightforward process. Just follow these steps:

1. Cook the Sausage: In a large pot over medium heat, add the olive oil and sausage. Cook until browned, breaking it apart with a wooden spoon as it cooks, about 5-7 minutes.

2. Add Vegetables: If using, sauté the chopped onion in the pot until translucent. Then, add the minced garlic and cook for another minute until fragrant.

3. Combine Ingredients: Stir in the penne pasta, chicken broth, heavy cream, and Italian seasoning. Ensure the pasta is submerged in the liquid.

4. Bring to a Boil: Increase the heat to high and bring the mixture to a boil.

5. Simmer: Once boiling, reduce the heat to low, cover the pot, and let simmer for about 15 minutes. Stir occasionally to prevent sticking.

6. Check Doneness: After 15 minutes, check if the pasta is al dente. If not, cover and cook for a few more minutes as needed.

7. Add Cheese: Once the pasta is cooked, remove the pot from heat. Stir in the shredded cheese until melted and creamy.

8. Season: Taste and adjust seasoning with salt and pepper to your preference.

9. Garnish: Serve immediately, garnished with fresh parsley for an extra burst of flavor.