The Astrid Lindgren Memorial Prize is the largest monetary prize in children’s literature.  This year’s prize when to Swedish author, Barbro Lindgren.  Here is more information from the New York Times article:

In its citation, the 12-member prize jury called her “a literary pioneer” and praised her adventurous use of language and the psychological nuance of her writing. “She has reinvented not only the picture book for the very young,” the citation reads, “but also the absurd prose story, the existential children’s poem, and realistic fiction for young adults. With perfect pitch, she presents to us both playful shenanigans and moments of bright joy, the inscrutable nature of life and the nearness of death.”