Bring a large pot of salted water to a boil.

Add penne pasta and cook until al dente, about 8-10 minutes.

While pasta is cooking, remove casings from sausage.

In a large skillet, scramble fry the sausage with chopped onions and garlic over medium heat until browned and no longer pink.

Add diced tomatoes (undrained) to the skillet and bring to a boil.

Season with salt, pepper, dried basil, and Italian seasoning.

Reduce heat and simmer for 1 minute.

Add broccoli florets to the skillet.

Cook until broccoli is tender-crisp, about 5-7 minutes.

Continue cooking the sauce to your desired consistency.

Stir in half of the parmesan cheese (if using).

Drain the pasta.

Add the cooked pasta to the skillet with the sausage and broccoli sauce.

Toss to combine.

Serve hot, garnished with remaining parmesan cheese, if desired.