I made this No Bake Watermelon Cake last night for dessert. I used the recipe from this site:
No Bake Watermelon Cake
Mine didn't look as nice as the one on the recipe site, but the taste was all there. I used coconut milk for the icing. I topped it off with fruits, nuts, seeds and then drizzled the top with a chocolate sauce I made using unsweetened cocoa. What a nice summer treat!