Baked Tortellini with Three Sauces

(from ??? via Carol Stephenson)

1 lb ground pork sausage
1 onion, chooped
2 Tbsp flour
1 jar pasta sauce (26 oz)
1/3 cup water
1 package frozen cheese tortellini (still frozen) (19 oz)
1 jar pesto sauce (8 oz)
1 jar garlic Alfredo sauce (16 oz)
1/3 cup grated Parmesan cheese

Preheat oven to 350F. Spray a 9x13 in glass baking dish with nonstick cooking spray and set aside.
In large skillet, cook sausage with onion, breaking up sausage with a fork until the meat is browned and the onion is tender. Drain, if necessary. Sprinkle flour over the meat mixture and cook for 1-2 minutes.
Add pasta sauce and water and bring to a simmer. Remove from heat and stir in tortellini and pesto sauce. Spread in prepared pan.
Top with Alfredo sauce and sprinkle with cheese. Bake for 40-50 minutes or until the casserole bubbles and cheese melts and starts to brown. Let stand for 10 min before serving.

Serves 8.