This Low Calorie Grilled Watermelon is just 138 calories (for a pound of watermelon!) and makes the best grilled dessert!I love to add all three of the optional toppings, salty and sweet with a little bit of spice. So yummy!Special Tip: This grilled watermelon is great the next day as well. I like dice leftovers and make a yummy Watermelon Salad with it!