Celebrate National Blueberry #Pie Day with today's #CIEditorsPick: Blueberry Pie! When making our #blueberrypie filling, we found that if we used more than 2 tablespoons of tapioca, the texture of the filling took on a gummy consistency we didn’t like. But 2 tablespoons or less resulted in a filling that was too loose. So we stepped into the test kitchen and after conducting an experiement to test thickening our pie we found that a little tapioca plus a grated apple created a juicy but sliceable filling. Tap the link in our bio to access the #recipe, and don’t forget to hop on over to cooksillustrated.com every day for new free content. #BlueberryPieDay