In a mixing bowl, combine corn meal mix, nonfat milk, egg whites (or whole eggs), and oil (if using).

Whisk all ingredients together until well combined, ensuring no lumps remain.

Preheat a lightly oiled waffle iron according to the manufacturer's instructions.

Pour the batter onto the hot waffle iron, being careful not to overfill.

Cook the waffles until they are golden brown and crisp, typically 3-5 minutes.

Remove the cooked waffles from the iron and serve immediately.