This Pioneer Woman Poppy Seed Chicken Casserole is made with cooked and cubed chicken breasts, sour cream, condensed cream of chicken soup, crushed Ritz crackers, melted butter, poppy seeds, and optional cooked rice. It takes around 45 minutes to prepare and serves 8. Pair your Poppy Seed Chicken Casserole with Green Beans and Carrots, Rice Pilaf, Spinach Salad, and Mashed Potatoes.