Chicken Casserole

1 rotisserie chicken shredded. Put in big pan. Mix 1 cup sour cream, 1 can of cream of chicken and 1 cup of cream of mushroom. Pour into pan over shredded chicken. Bake on 350* for 30 min. crush/crumble 1 sleeve of ritz crackers over casserole and pour 1 to 1 1/2 stick of butter over crackers. Bake till crackers brown. Can broil but u have to watch it good. Or it'll burn quick