4 3/4 ounces all-purpose flour, approximately 1 cup
4 3/4 ounces whole-wheat flour, approximately 1 cup
1/2 teaspoon baking soda
1 teaspoon baking powder
1 teaspoon salt
3 tablespoons sugar
3 whole eggs, beaten
2 ounces unsalted butter, melted
16 ounces buttermilk, room temperature
2 cups frozen wild blueberries or fresh blueberries
Vegetable spray, for waffle iron
Preparation
Preheat waffle iron while making the batter.
In a medium bowl whisk together the flours, soda, baking powder, salt, and sugar.
In another bowl beat together eggs and melted butter, and then add the buttermilk. Add the wet ingredients to the dry and stir until combined. Fold in blueberries. Allow to rest for 5 minutes.
Spray the top and bottom surfaces of the waffle iron with cooking spray. Ladle the waffle batter onto the iron. Close iron top and cook until the waffle is golden on both sides and is easily removed from iron, approximately 5 to 6 minutes.
Serve immediately or keep them warm in a 200 degree oven until ready to serve. Top with pure maple syrup.
20 minutes 
