Split wings at each joint. Discard tips (or save to use in broth). Put wing sections in baking dish and bake at 325 degrees for 35 minutes. Place in bowl. Combine hot sauce and butter and pour over chicken wings. Cover and refrigerate at least 3 hours. Before serving, place wings in baking pan and back at 425 degrees for 10 minutes. Serve with blue cheese dressing for dipping.