Preheat oven to 300 degrees Fahrenheit.

Wash kale leaves and dry very well.

Using a paring knife or kitchen scissors, trim out the ribs and discard. Cut the remaining kale into approximately two-inch pieces.

Place kale in a large bowl and toss gently but thoroughly, making sure that every last bit of kale leave is coated with olive oil.

Line a large baking sheet with parchment paper or a silicone baking mat. Lay kale in a single layer on the baking sheet and sprinkle with salt. (If you have more kale than baking sheet, you may need to cook them in batches).

Bake for 8 - 12 minutes, just until crisp. Start checking at 8 minutes - don't overcook or they'll burn! I find that Lacinato kale cooks faster than curly kale. If your kale isn't crisp after 12 minutes, keep baking until it is - check every couple minutes.

Remove from oven and let cool for a minute or two, then serve.