Wash the kale leaves. Strip the leaves from the stems and place the leaves in a salad spinner. Spin to remove as much water as possible.
If leaves are still damp, use a kitchen towel to blot dry.
Turn oven to lowest setting possible (ex: 170F).
Line 2 baking sheets with parchment paper.
In a large bowl, combine the tahini, lemon juice, tamari, and maple syrup.
Stir or whisk through until fully smooth in the bottom of the bowl.
Add kale leaves and toss through with your hands, gently incorporating the sauce through the leaves.
Add the nutritional yeast, and continue to work through the kale leaves.
Transfer the kale leaves to the prepared baking sheets, spreading out.
Sprinkle the leaves with the sea salt.
Place the baking sheets in the oven on 2 racks. Bake for an hour.
Then, turn off oven, rotate trays, and then let sit in the oven for 30 minutes.
Then, turn oven to 170F again, and bake for another 15–20 minutes.
Check kale: if completely dry and crispy, remove from oven. If not, turn off heat and let sit for another 30–40 minutes. By then, the kale should be crisp and ready to eat!