Add ingredients in the order listed, beating together eggs and flour with a whisk or in mixer.
Slowly add in water so mixture is smooth. Add in sugar and salt and then mix in the melted butter, ensuring that batter is as smooth as possible.
Heat skillet over medium low heat and spray lightly with cooking spray. Pour out a small amount of batter and spread it around with a wooden spoon or spatula. You want the crepes to be thin.
Lightly cook on each side. The crepe is ready to flip when the top starts to cook (similar to a pancake), and a spatula can slide under the crepe easily.