Four Cheese and Sausage Manicotti

1 package Manicotti
1 lb. Italian sausage (I use turkey)
1 small onion, chopped
2 cloves garlic, chopped
2 (14 oz.) cans diced tomatoes
1 (6 oz.) can tomato paste
1 teaspoon basil leaves
1 teaspoon sugar
1/2 teaspoon salt
1/4 teaspoon pepper
1 (15 oz.) container ricotta cheese
2 cups (8 oz.) shredded mozzarella cheese, divided
1 cup (4 oz.) shredded provolone cheese
1/3 cup grated Parmesan cheese
1 egg

Cook pasta according to package directions. In large skillet, over medium heat, brown sausage. Add onion and garlic, cook and stir until onion is tender. Stir in tomatoes, tomato paste, basil, sugar, salt and pepper. Bring to a boil. Reduce heat and summer uncovered 15 minutes.

Combine ricotta cheese, 1 cup mozzarella cheese, provolone cheese, Parmesan cheese and egg. Mix well. Stuff pasta.

Spread half of the sauce on bottom of greased 13 x 9" baking dish. Arrange pasta over sauce. Sppon remaining sauce over pasta; cover. Bake 35 minutes in a 350 degree oven. Uncover; top with remaining  cup mozzarella cheese. Bake 5 minutes longer. (Add about 5 minutes to baking time if prepared early and refrigerated.)