Prepare the kale chips according to the recipe, then spread across a large parchment-lined baking tray (or two) in a single layer, with some space between. Then bake in a preheated oven at 300F/150C for 10 minutes, then rotate the tray and shake/flip them. Continue to bake for 10-15 minutes, or until they are crispy and lightly browned. Some of the baked kale chips will brown and become crispy sooner than others. To avoid burning, you can use tongs to remove the leaves as they become ready. That way, none are under or over-baked.