Description Divinely Gluten Free’s Gluten Free Blueberry Muffin Mix Non-GMO No Artificial Colors No Artificial Flavors No Artificial Preservatives. Always Delicious Made In the USA This Gluten Free Blueberry Muffin Mix was created in a dedicated gluten free environment. Each batch of our gluten free blueberry muffin mix is tested to ensure the integrity of our gluten free facility and the ingredients we so carefully source. Testing is performed in our quality control lab using a food manufacturing LDF test procedure.