The present invention provides a method for providing a coating comprising maltitol which can prevent the coating from being chipped without using reinforcement or binder at low cost and at short times. The present invention provides a method for providing a coating for a core material, which comprises: (i) a first coating step which comprises coating the core material with an aqueous solution comprising maltitol and a crystallization inhibitor which inhibits crystallization of maltitol in an amount more than 3% by weight and not more than 6% by weight based on the weight of total solid content of sugar alcohols including maltitol in the solution, (ii) a second coating step which comprises coating the core material which has been coated by the first coating step with a powder maltitol composition, and (iii) a drying step which comprises drying the thus coated core material.