01 - Preheat your waffle iron according to the manufacturer's instructions.
02 - In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
03 - In another bowl, beat the eggs, then add buttermilk, melted butter, and vanilla extract. Mix until smooth.
04 - Pour the wet ingredients into the dry ingredients and stir gently until just combined. Do not overmix.
05 - Fold in the blueberries gently to distribute throughout the batter.
06 - Lightly grease the waffle iron. Pour the appropriate amount of batter into the center and close the lid. Cook until golden brown and crisp, about 4–5 minutes.
07 - Repeat with remaining batter until all waffles are cooked.
08 - Serve warm with your favorite toppings from the serving ingredients.