It is not essential to heat Little Spoon Babyblends. However, a person can do this if they wish by placing the container in a bowl of warm water or by using a microwavable dish in the microwave. A person should make sure it is not too hot for the child to eat after warming it. Little Spoon recommends people heat up Plate meals. They can do this in the microwave or oven. Each Plate comes with heating instructions.