Pasta with chicken sausage and broccoli

from: Real Simple

12 ounces rigatoni (about 4 1/2 cups)

1 tablespoon olive oil

1 onion, sliced

6 ounces fully cooked chicken sausage links, sliced

1 head broccoli, cut into florets and stems sliced

1/4 grated Parmesan

Cook the pasta accordingtothe package directions.
Meanwhile, heat the oil in a large skillet over medium-high heat. Cook the onion, stirring often, for 3 minutes. Add the sausage and cook, stirring until browned, about 2 to 3 minutes. Add the broccoli and 1 1/4 cups water and simmer, covered, until the broccoli is tender, about 5 to 6 minutes.

Toss the pasta with the sausage mixture and any remaining liquid and the Parmesan.