From Geisel Honor winner Salina Yoon comes the first of a new early reader series starring a charming pair of friends, Kat and Mouse!Kat and Mouse are opposites: Kat is spontaneous and creative, and Mouse likes routine - and cheese. They might like very different things, but they also like one another and have lots of fun!The friends have lunch together every day. Kat's lunchtime is an adventure, with culinary creations like ham-pickles-and-sauerkraut sandwiches or creamy coconut casserole drizzled with caramel. Mouse, on the other hand, has a cheese sandwich every day. Kat tries to offer Mouse some of her favorite foodie creations, but Mouse always says, "No thank you. I just like CHEESE!" Surely there's more to life than cheese sandwiches. Can Kat figure out a way to push Mouse out of his routine?Join this dynamic duo for a hilarious story about stepping out of our comfort zones and finding joy in unexpected things, old and new!.