The present invention provides an innovative packaging for microwave preparation of expandable food, such as cookies, an innovative food product prepared from the packaging and the method of preparation thereof. The innovative packaging includes first and second susceptor sheet portions each having an accordion-like shape; one or more members for spacing the susceptor sheet portions at a predetermined distance; and an expandable uncooked food placed between the two susceptor sheets, wherein the food is in intimate contact with sheet portions and becomes efficiently browned and crisped during microwave cooking. The food is preferably a cookie dough.