Penne and Smoked Sausage Casserole

This is from Taste of Home Easy Family Casseroles that was sold in the spring 2008 at check out counters as a 5x7 sized magazine.

2 cups uncooked penne pasta
1 pound smoked sausage or keilbasa cut into 1/4 inch slices (I use Jenny-O turkey keilbasa)
1 1/2 cups milk
1 can cream of celery soup
1 1/2 cups chedder french fried onions, divided
1 cup shredded mozzerella, divided
1 cup frozen peas (i'll use about 2 cups mixed veggies)

cook pasta. Meanwhile in a skillet brown sausage over medium, drain. In a large bowl combine milk and soup. Stir in 1/2 cup onions, 1/2 cup cheese, veggies and sausage. Drain pasta and add to mixture. Stir.
Transfer to greased 9 x 13 dish, Cver and bake at 375 for 25-30 minutes. Sprinkle with remaining onions and cheese, bake uncovered 3-5 minutes until cheese melts.