An easy, fresh and super light Mediterranean watermelon salad. Three main ingredients: watermelon, cucumber, and feta cheese. But to take it to the next level. Watermelon Salad - an unexpected concoction of watermelon, mint, feta cheese, and red onion. This watermelon salad is surprisingly perfect in every way. May 31, This combination of juicy watermelon and fragrant cheese is both flavorful and colorful for a cookout or side dish. Get this recipe at PBS.