The phrase "hidden veggies" refers to vegetables that are incorporated into a dish in such a way as to make them less noticeable or unappetizing, but still provide nutritional value. This can be done through various methods such as blending, pureeing, grating, or shredding the vegetables and mixing them with other ingredients so that they become part of the dish's texture, flavor, or color without being recognizable as separate entities. The goal is to encourage people, especially children or picky eaters, to consume more veggies by making it fun or hiding the taste and appearance in a way that still provides nutritional benefits.