I had a salad similar to this over the weekend and made up my version. It's low in calories and very tasty. I've submitted it to the recipe database. Cristy's Watermelon Salad 3 cups baby spinach 3 cups mixed greens 4-6 oz fat free feta chopped red onion to taste 4.5-5 cups of cubed watermelon Toss or top w/ fat free…