Try this Collard Chips recipe, or contribute your own.
Unlike fragile kale leaves that shatter easily, sturdy collard greens require complete removal of their tough center ribs before baking. Cut away the stem from the base to the tip of each leaf, then tear the remaining greens into uniform three to four inch pieces. Dry the washed leaves thoroughly with paper towels; remaining surface moisture traps steam inside the oven and ruins the desired crisp texture.
Applying a very light coat of olive oil prevents the leaves from becoming soggy while they bake at 350 degrees Fahrenheit. Arrange the pieces in a single layer on parchment paper without overcrowding the baking sheet. Monitor the chips closely around the seven-minute mark, watching for edges that curl and turn dry rather than dark brown.
Dehydrated leafy greens absorb ambient humidity rapidly and lose their crispness within hours of baking. Store leftover chips in an airtight container with a paper towel to absorb residual moisture, though consuming them immediately yields the best flavor and texture.