If you are making a dish which consists of a proper meal, but possible that your child doesn't like it, then make a side dish which he really likes. Give him food in small servings but may be at frequent intervals than giving him the whole meal at one time. May be he doesn't like that whole quantity of meal in front of him. Show them when you are preparing food for him. Ask him to help you garnish the dish with whatever is manageable by him. This will give a sense of satisfaction that he is going to eat something that he has made himself and make it look as colorful as possible. Make it attractive for children. ALL THE BEST !!