Chocolate-Free, Dairy-Free Chocolate Milkshake

I invented this "Chocolate Milkshake" that contains neither chocolate or milk when I was feeling envious of a regular chocolate milkshake.  We think it is surprisingly good.

Ingredients:
2 frozen bananas
3 T Peanut Butter Powder
2 T Carob Powder
Ice/Water to right consistency and to dilute intensity of other flavors (I think I use about 1 cup of ice cubes and 1/4 c water, but really never paid enough attention)

Blend and enjoy!