Stuffed Shells

From Taste of Home website. My family loves these babies.

1  med  onion, finely chopped

3  cloves  garlic, minced

1  Tbs  vegetable or olive oil

1-1/2  cups  ricotta cheese

1  egg

1  cup  shredded Mozzarella cheese, plus more for topping

1/2  cup  freshly grated Parmesan cheese

1  tsp  dried Italian seasoning

1/2  tsp  black pepper, optional

1  (10 oz)  pkg frozen chopped baby spinach, thawed and squeezed dry

1  med  jar  Prego spaghetti sauce (or your favorite brand)

1-2  lbs  Italian sausage (not links)

1  pkg  jumbo pasta shells

Boil the pasta according to package directions, until just tender.

Fry the sausage until fine and crumbly. Set aside. In another frying pan, 

saute onions and garlic in the oil, just until tender, but not browned. Put in a medium size mixing bowl. Add ricotta, 1-1/2  cups Mozzarella, and Parmesan cheese. Add the egg, seasonings and spinach (spinach is optional). Mix until well blended.

In a large oblong Pyrex baking dish, spread a little spaghetti sauce on the bottom. Sprinkle with some of the cooked sausage.

Spoon the cheese mixture into the shells, and place on top of the sausage in baking pan. Repeat until all the filling is used up. Top with remaining sausage. Pour the remaining spaghetti sauce over the filled shells. Sprinkle with more Mozzarella cheese (as much as you want). Cover with foil and bake @350 degrees for 45 minutes. Make sure the cheese has melted in the shells.