I should start out by saying, I don't really like watermelon. The taste to wateriness ratio does not make it worth it to me. When my husband showed me a recipe for grilled watermelon in Mark Bittman's "How To Cook Everything Vegetarian", I just had to try it. Afterall, I had a watermelon from my farm share and we needed to eat it.
I chose to try the olive oil and cayenne pepper rub to go on the melon slices before grilling them. Grilling watermelon is a strange thing. I found that you really need to turn the heat up to keep the water evaporating. Otherwise, it is pretty strait forward. Keep grilling and turning till it is as dehydrated and charred as you want. The end product is surprisingly sweet and caramelized. And the texture is not at all like watermelon but almost dense. I really liked it and if I ever find myself with watermelon again, I will make it!
For friends: This will make an appearance at Grill-Fest!