Spray both surfaces of your waffle iron with cooking spray.
Ladle 4 to 6 oz (½ to ¾ cup) batter on the iron and close it. It's not unusual for a bit of batter to seep out of the edges of the iron. If there's excessive leakage, use less batter for the next waffle.
Cook until the waffle iron's indicator light shows that cooking is complete, or until no more steam comes out. The finished waffle should be golden brown and crispy.
Lift the waffle out of the iron with a pair of tongs and either serve right away or transfer it to the oven to keep warm.