We have a large collection of smoothie recipes at
http://www.3fatchicks.com/cookbook/l...ie-recipes.php
I personally don't follow a recipe, but just throw together whatever I'm in the mood for. My current favorite is as follows:
In a blender, place equal parts of unsweetened applesauce, nonfat plain yogurt, and skim milk. I add a few packets of Splenda and a scoop or two of plain soy protein powder. I get the unflavored kind. I also add a hefty dash of cinnamon. Whirl till smooth. Tastes like apple pie