Chicken Spaghetti Casserole is adapted from the Pioneer Woman's recipe and uses a shredded rotisserie chicken to make it easy to throw together on a weeknight. Perfectly al dente pasta combine with a made-from-scratch cream of mushroom soup sauce with chopped green pepper, pimentos, diced onion, and a generous amount of shredded cheddar cheese. #chicken #spaghetti #casserole #chickenspaghetti #pasta #dinner #easy #rotisseriechicken #costco #homemade #fromscratch #weeknight #recipe #...