When I'm searching for a really light treat, I always make this Frappe. It's a blended, icy coffee drink that's really satisfying despite it's lack of fat and sugar. You can add anything you want to the basic recipe, such as raspberries, bananas, peanut butter, caramel, vanilla, or peppermint extract.
Icy Mocha Frappe
1 cup ice
3/4- 1 cup cold coffee
splash skim milk (substitute any kind)
few squirts of sugar free chocolate syrup
1 T (or to taste) Truvia, Stevia, or Splenda
Throw all the ingredients into a blender and blend. If your feeling naughty top with a squeeze of light whipped cream.