Whisk the cornmeal, flour, baking powder, sugar, and salt in a bowl. Add the milk, egg, and melted butter. Whisk until just mixed together.
Heat your waffle maker. I set mine to a 3½ out of 5.
Spray your waffle maker with some baking spray.
Pour enough batter to almost fill the mold (about ⅓ to ½ cup depending on the size of your waffle maker); it will puff up and spread as it's baking.
Cook according to directions for waffle maker; I have to wait until the light goes from red to green on mine. These do brown quicker than regular waffles so keep an eye on them. Repeat with remaining batter; makes approximately 7 standard waffles. Keep on a plate with a towel covering the waffles to keep them warm.