Place all of the ingredients in a high speed blender and puree until smooth.
Garnish with toppings, if desired.
Notes
*A little bit of peppermint extract goes a long way, so be very careful that you don't add too much! You might like to start with a drop or two (or 1/8 of a teaspoon) and then add more, to taste, if necessary.*For purposes of calculating nutritional information, I used my favorite IdealLean Cake Batter protein powder. You can substitute with a similar vanilla or cake batter flavored protein powder, but the nutritional stats will change. As an alternative, I also like Quest Vanilla Milkshake protein powder in this recipe.