In a small bowl, cream the butter, sugar and cinnamon. Add eggs, one at a time, beating well after each addition. Stir in pineapple and raisins. Place stuffing croutons in a large bowl; stir in pineapple mixture.
Transfer to a greased shallow 3-qt. baking dish. Cover and bake at 325° for 60-75 minutes or until a thermometer reads 160°.