Wash and dry kale and cut off of rib into 2" pieces. For one bunch of kale, use about 1 T of olive oil (or less, I use only about 1 t) and sprinkle with kosher salt.
Bake in oven for about 15-20 minutes or until you can smell the kale, check the kale and the sides should start to curl. It will be crispy and "chip" like, that's when you know it's ready.
