Yield: 12 muffins
Preheat oven to 400 degrees. Grease a 12-cup muffin tin or fill each cup of the tin with a paper liner.
Mix flour, 1/2 cup sugar, baking powder and salt together in a large bowl. Make a well in center and set aside.
In small bowl, whisk egg, milk and oil to blend. Pour mixture into well of dry ingredients and mix until blended.
Combine blueberries with remaining 1 tablespoon sugar and gently fold into muffin batter. Fill muffin cups about 2/3 full.
Bake for 25 minutes, or until toothpick inserted in center comes out clean. Dust with confectioner's sugar, if desired.
Please note that some ingredients and brands may not be available in every store.