Blueberry Rhubarb Vanilla Smoothie, Dairy and Gluten Free Are you looking for a healthy breakfast smoothie?  I have one for you!  This recipe for a Blueberry Rhubarb Vanilla Smoothie is another easy, quick, and healthy recipe!  You know from my last post on Rhubarb Pudding Cake all about the great nutrient value you get from Rhubarb.