Pip and Posy by Axel Scheffler (2011)
It's a rainy day, so Posy decides to stay at home and do some baking. With the cupcakes safely in the oven, she settles down to lick the bowl when a large, blue, furry paw appears at her window. A moment later, a monster walks in- oh, no! But something about the monster looks familiar. . . .