I am so glad you posted this! My gram just gave me 3 quarts of frozen blueberries from last season. Can't wait for the brain freeze. I wonder if there are any alchoholic blueberry daquiri-type drinks we can think of? Hmm...
Instead of the vanilla ice cream, could you perhaps substitute silken tofu and a little bit of vanilla extract and maple syrup/honey, or something? :) If you're trying to do the whole diet/protein/health smoothie, that is :P
Give it a shot, Sweet.
I really couldn't tell you. I'm going to tell you to live dangerously and try it. Others here may follow your lead, if it comes out ok. Let us know.
Me.... no way, no how with the tofu stuff. Sorry.
But the vanilla & honey idea sound goody good.