Scenario: PICKY kids, ages 2, 4 & 5. Other then the whole "puree and hide", what's your best recipe?

Do you know you can hide veggies in any recipe without kids knowing. If you are making a pasta with a pasta sauce, finely chop veggies, such as zucchini, carrots, and mushrooms. There is a great cook book from Gerry Seinfelds wife, where she hides all types of veggies in meals and the kids don't even know it