Step 1

Preheat oven to 400 degrees.

Step 2

Spray muffin tin with cooking spray.

Step 3

Combine the whole wheat flour, all purpose flour, oatmeal, sugar, salt and baking powder in a large bowl.

Step 4

In a separate bowl whisk together the milk, egg, oil and vanilla.

Step 5

Add the wet ingredients to the dry ingredients. Stir just until all of the ingredients are combined.

Step 6

Gently fold in the blueberries.

Step 7

Divide the batter evenly between the 12 muffin cups.

Step 8

Sprinkle the tops of the muffins with the coarse sugar if using.

Step 9

Bake for approximately 20 minutes until muffins are lightly browned and a toothpick comes out clean.