Bring a large pot of salted water to a boil and cook the penne according to package directions until al dente; drain and set aside.
While the pasta cooks, heat a large skillet over medium heat and add the Italian sausage; break it up and cook 4–5 minutes until no longer pink.
Add the minced garlic to the skillet with the sausage and cook 30–60 seconds until fragrant, stirring.
Stir in the drained, chopped stewed tomatoes, heavy cream, salt, dried basil, and ½ cup of the shredded Parmesan; bring the mixture to a boil over medium heat.
Reduce heat and simmer uncovered 6–8 minutes, stirring occasionally, until the sauce thickens slightly.
Drain the cooked penne and add it to the skillet; toss until the pasta is evenly coated with the sauce.
Serve immediately and garnish with the remaining shredded Parmesan cheese.