The rounded shape of the base and the domed cover optimize cooking with even heat distribution and reduce hot spots that can result in overcooking. Healthy foods are made easier thanks to the non-stick qualities of UltraPro Ovenware. No added butter or oils are needed for cooking most recipes. Steam release vents on the sides of the base and cover help prevent steam build-up and regulate humidity to let your food brown nicely while keeping optimal moisture. Several configurations for unlimited cooking possibilities​ Classic: food in the base and cover on top​ Reverse: The cover is used as a base for roasts, focaccia, baked apples. Content is easier to manipulate after cooking.​ Cook bain-marie: The cover is turned back on the base, filled with water, for gentle cooking like delicate desserts and puddings.​ Stack-cooking: Saves a lot of time and energy, cook 2 dishes at once, cover is placed upside-down on the base.​