I recommend Deceptively Delicious. My boys love eating those meals and they think it tastes better than without hidden vegies! Also I hide vegies in pastas of all descriptions, curries, risotto, zucchini slice, omelettes etc. I have also found as a last resort at times that steamed vegies are more likely to be eaten when topped with cheese, sour cream or if we are really desperate, tomato sauce. I don't use toppings often, especially tomato sauce, but every now and then I will resort to that.