Perhaps not new foods but preparing healthy foods in new ways can be especially exciting for little picky eaters.
The Spiralizer (on Amazon here for around $25: https://amzn.to/2MK3vsc ) is a great kitchen tool for making zucchini noodles, thin sliced potatoes, and shredded carrots or other vegetables for salads. It comes with 5 different blades and a great recipe book. It makes eating healthier...easier and more fun.
