Preheat oven to 350 and grab 2-3 large baking sheets.
Rinse kale and de-stem by pulling the leaves off in pieces. The pieces can be rough in shape, approximately 3-5 minutes.
Toss kale onto baking sheets and bake in the oven for 5-7 minutes or until kale is soft and wilted but not brown. I had do two rounds of baking kale because I didn't have enough space in the oven.
Remove kale from baking sheets and place on a cutting board to cool for a few minutes.
Once cooled, bunch kale together and slice into ¼ inch thick slices.