When thinking of ways to get your kids to try new flavors, switch up the texture---puree them. Now I'm not saying hide them, but instead use the puree as the highlight of the meal, like in a soup. Or you could add some new spices. In my case I tried using a leek and extra garlic. Another great trick I tried was to play around with different temperatures of the foods. Maybe they'd rather have the food cold. Of course with some soups cold or lukewarm might not be appetizing, but for this soup it worked just fine.
Whatever you do, don't give up on your child's taste buds! Keep trying they will eventually come around. - You did didn't you?
1 tbsp olive oil
1 leek, cleaned and diced
2 cloves of garlic, peeled and minced
1/2 cup red pepper, diced
1 28oz. can whole tomatoes with juice
1 cup 2% milk
Heat olive oil in large stock pot. Add leek and garlic, cooking until leeks become transparent. Then add red pepper and let soften. Pour in tomatoes with juice and bring to simmer for about 15 minutes. Once heated then add milk and puree using a hand blender or pour small batches into your food processor.