"In the Night Kitchen" is a children's picture book written and illustrated by Maurice Sendak. The story follows a young boy named Mickey who falls into a fantastical dream world while he sleeps. In this imaginative setting, he encounters a group of bakers who are preparing a large cake. As Mickey navigates this dreamlike kitchen, he helps the bakers and ultimately finds his way back home. The book is known for its whimsical illustrations and playful narrative, exploring themes of imagination and the transition between sleep and wakefulness.