Whisk dry ingredients together, add the blueberries and gently mix. Add the wet ingredients. Whisk just until combined.
Heat a waffle maker, add 1/2 cup batter to the hot iron. Cook until desired crispness.
Sprinkle with powdered sugar
Video
Notes
You can make your own buttermilk by adding 1 tablespoon lemon juice or vinegar to 1 cup milk. Let set 5 minutes, stir. Freeze leftover waffles: Place on a baking sheet, place in the freezer. After frozen put the waffles in a ziplock freezer bag. Reheat frozen waffles in a toaster. I often make a double batch and freeze them in quarters for easy toasting.