My kale leaf experiment turned out great. I washed the leaves and removed the center stem, then patted them dry. I have one of those pump-up mister bottles full of olive oil, and I used that to spray a thin coating of oil on each leaf front and back. I put them under the broiler for about five minutes until they got all dry and crispy on the first side, then turned them over to get crispy on the second side. The second side took only about two minutes. I sprinkled them with some salt and they were delicious! I imagine they would be even better grilled outdoors.
We keep meaning to get a grill, but hubby doesn't grill and I have a hard time justifying such a large expense for cooking. I've never had one I liked to clean, and have had many that were just cleaning nightmares.
Oh, but fresh veggies on a grill. Mmmm. What a wonderful meal!