Add the Italian sausage to the skillet, breaking it apart as it cooks until browned.
Pour in the marinara sauce and heavy cream, stirring to combine.
Add the grated Parmesan cheese, stirring until melted and smooth.
Assembly
Toss the cooked rigatoni in the sauce, ensuring every piece is well-coated.
Season with salt and pepper to taste.
Serve hot, garnished with fresh basil if desired.
Notes
To keep leftovers fresh, cool completely before storing in an airtight container in the refrigerator for up to three days. For longer storage, consider freezing, though texture may alter.