Preheat oven to 325 degrees F. Line a muffin tin with paper liners.
In a medium sized bowl, sift together the gluten free flour blend, baking soda, and salt. Set aside.
In a large mixing bowl mix together the organic canola oil and sugars. Add the eggs, mashed bananas and vanilla, stirring until well blended.
Fold in the dry ingredients, then stir in the blueberries.
Pour batter into prepared muffin pan and bake at 325 degrees F for approximately 30-35 minutes or until toothpick inserted in center comes out clean. Cool in the pan for about 15 minutes, then transfer to a wire rack to cool completely.
Notes
Store leftover muffins in an airtight container. They should stay fresh for about 4 days.