Boil the Pasta: Bring a large pot of salted water to a rolling boil. Add pasta and cook according to package instructions until al dente. Reserve a cup of pasta water before draining.

Brown the Sausage: Heat olive oil in a large skillet over medium heat. Add sausage and cook until browned, about 5-7 minutes.

Sauté the Vegetables: Add onion, bell peppers, and garlic to the skillet. Sauté for 15-20 minutes until vegetables are tender.

Create the Sauce: Stir in crushed tomatoes and heavy cream. Add Italian seasoning, brown sugar, and balsamic vinegar. Simmer for 5-10 minutes until thickened.

Combine Pasta and Sauce: Add cooked pasta to the skillet and toss with the sauce. Adjust consistency with reserved pasta water if needed.

Add the Finishing Touches: Stir in Parmesan cheese until melted and adjust seasoning with salt and pepper. Serve hot.