Blueberry Soup en Croûte

Never heard of it?   

I made it up.  Accidentally.  I meant to make a blueberry pie, and it did look like a pie, until I cut into it.

Ooops.

A friend suggested that next time I should use instant tapioca instead of corn starch to thicken the blueberry mixture and I will.  I used a William Sonoma recipe and this does taste great.  But it's difficult to serve.