I fully understand that little ones can be fussy and particular about what they eat. I started my Web site www.weelicious.com as a resource for parents with little spare time who want to cook for their little ones and inspire them to eat well.
I believe from experience that if you teach little ones to eat the freshest fruits and vegetables from day one, they'll naturally learn to love and appreciate their value. I'm not saying that every child is going to love every vegetable, but I do know that there are ways for you to get them to eat cauliflower without going through an elaborate process of hiding it in macaroni and cheese and promising them: "There's no vegetables in here."
Why not make a delicious, colorful dipping sauce to show your kids how much fun it is to dip their veggies? Try getting your kids involved: Start a garden--even a window box--so kids learn the relationship between food and their environment, take them to the farmer's market not only to see the variety but also to meet the people who grow their food, let them help pick the produce that will later be on their plate, allow them to sit with you and participate while you cook.
When my son eats his vegetables, I always hold his arm up and say "muscles"! He loves it, has fun, and that's what eating should be.