This was a book?! Shrek! by William Steig

While looking through Goodreads, I came across a book that that I honestly had no idea was a book. Did you know that Shrek! by William Steig was a book? What book have you discovered recently that amazed you?

Goodreads summary: Shrek, a horrid little ogre, goes out into the world to find adventure and along the way encounters a witch, a knight in armor, a dragon, and, finally, a hideous princess, who's even uglier than he is! Paperback, 32 pages. Published September 1st, 1993 by Farrar, Straus and Giroux (BYR) (first published 1990).