I am a author, artist and grandmother.  I have written and illustrated over 30 children's books, including "Ants on a Log", available from Amazon and Barnes and Noble.  Ants tells the story of Jack the Rabbit who hates vegetables and how his mother copes with this problem.  Based on my own experience with my son (who is now an adult with his own children), I think you might enjoy reading this book to your children.  It's often difficult to figure out how to encourage your children to eat their greens.