Arnie the Doughnut by Laurie Keller
I love this book but it's really long and really detailed so it's best to read it to a smaller group so everyone can see what's going on in the illustrations. The story is awesome and the kids really seemed into it despite it's length.
Eat Your Peas by Kes Gray
The kids loved this book. They were absolutely shocked that she wouldn't eat her peas even after her mother offered her all that good stuff. Afterwards we talked about what their least favorite foods were and what it would take to get them to eat the foods they didn't like.
Boxes of Doughnuts