Cheesy Penne Pasta and Smoked Sausage Casserole

Cheesy Penne Pasta and Smoked Sausage Casserole 2 cups penne pasta, uncooked 14 ounces smoked sausage, cut into 1/4 inch slices 1 1⁄2 cups milk 1 (10 3/4 ounce) can cream of celery soup 1 1⁄2 cups cheddar French-fried onions, separated (I couldn't find cheddar, so I used regular and it was great) 1⁄2 cup mozzarella cheese, shredded, divided 1⁄2 cup cheddar cheese, shredded, divided Cook pasta according to package directions. Meanwhile, brown sausage in a skillet and drain. (I skipped this step since I was using fully cooked turkey smoked sausage and wouldn't have any fat to render). In a large bowl, combine milk and soup. Stir in 1/2 cup onions, 1/4 cup of each cheese, and sausage. Drain pasta and stir into sausage mixture. Transfer to a greased 13 x 9 baking dish. Cover and bake at 375 degrees for 25-30 minutes or until bubbly. Sprinkle with remaining onions and cheese. Bake, uncovered, 3-5 minutes longer or until cheese is melted