Preheat oven to 350°C. Keep the blueberries in the freezer until needed. Grease a 8"x8" (preferably glass) square pan. Mix dry ingredients in a medium bowl. Add wet ingredients to dry & mix well. With a spatula spread half of the mixture evenly across bottom of pan & press down firmly. Evenly pour the frozen blueberries over the bottom layer. Then spread remaining mixture evenly over blueberries and press down firmly. Bake for 55-60 minutes on middle rack. Let cool completely before cutting into bars or squares and enjoy as a snack or breakfast on the go.