Little Honey Bear and the Smiley Moon — Gillian Lobel

Little Honey Bear couldn't sleep. Through his bedroom window the moon was shining, as bright as day. And surely she was smiling at him.
Little Honey Bear and two friends set off to visit the friendly moon, following the shining silvery moonpath they discover one winter's night.
But suddenly, the path gets steeper, the wind grows colder, and the moon disappears. Alone in the dark, the three friends worry that they might not find their way home.
A delightful story of friendship with a magical, sparking finish throughout.