8-12 large kale leaves, rinsed, dried, cut lengthwise in half, center ribs and stems removed
1 Tablespoon olive oil
Preheat oven to 250°F. Toss kale with oil in large bowl. Sprinkle with salt and pepper. Arrange leaves in single layer on 2 large baking sheets.
Bake until crisp, about 30 minutes for flat leaves and up to 33 minutes for wrinkled leaves. Transfer leaves to rack to cool.