Try this Italian Kale Chips recipe, or contribute your own.
While traditional potato crisps rely on deep-frying to achieve their brittleness, dehydrated leafy greens require a gentler thermal approach to avoid scorching. Adequate surface area is paramount when roasting fibrous greens at high temperatures. If your baking sheet lacks the dimensions to accommodate four cups of foliage in a single, uncrowded layer, bake the leaves in successive batches rather than piling them high, which traps moisture and yields a tough, leathery texture.
Preheat your oven to 400 degrees Fahrenheit to ensure rapid dehydration. Distribute the torn pieces evenly across a greased cookie sheet, applying oil sparingly via a fine mist to prevent sogginess. Bake for exactly 10 minutes on the top rack, monitoring closely as thin leaf edges turn bitter within seconds of crossing the threshold from dehydrated to burnt. Because internal temperature probing is impractical for thin vegetable crisps, rely strictly on visual cues: the leaves should look completely matte, snap cleanly between your fingers when bent, and feel paper-light.