Bookie and Cookie.

"Bookie and Cookie" is a children's book written by Blanca Gómez. The story follows the friendship between Bookie, a brown-skinned bibliophile, and Cookie, a pale-skinned baker. The two characters live on opposite sides of the book's pages and have never ventured to the other side. However, with the help of a clever plan involving cookies, they are able to explore the world outside their pages together. The book teaches young readers about the importance of adjusting and compromising in friendships. Suitable for ages 3-7. [Extracted from the article]