Start by preheating your waffle iron according to the manufacturer’s instructions. Lightly grease it with cooking spray or a small amount of butter to prevent sticking.

In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt. Mixing these ingredients first ensures the baking powder is evenly distributed throughout the batter.

In a separate bowl, whisk together the milk, eggs, melted butter, and vanilla extract until everything is well combined.

Pour the wet ingredients into the bowl with the dry ingredients. Stir gently until the batter comes together. Avoid overmixing; a few small lumps are perfectly fine.

Fold the blueberries into the batter carefully so they don’t break apart too much. This keeps them evenly distributed throughout the waffles.

Pour the recommended amount of batter into the preheated waffle iron and close the lid. Cook according to your waffle maker’s instructions until the waffles are golden brown and crisp.

Carefully remove the waffles and serve them warm. They’re delicious topped with maple syrup, extra blueberries, powdered sugar, or a little whipped cream.