Baked Ziti with Sausage
Ingredients1 (16 ounce) package dry ziti pasta1 pound mild Italian sausage1 (15 ounce) container ricotta cheese1 egg1 large yellow onion, minced2 teaspoons minced garlic1 teaspoon dried oregano1/2 teaspoon salt1/2 teaspoon ground black pepper1 1/2 (26 ounce) jars spaghetti sauce, divided1 (8 ounce)…