In a bowl, mix flour and salt. In another bowl, whisk eggs and milk until frothy; gradually add to flour while stirring until smooth. Stir in melted butter.

Let the batter rest for at least 30 minutes at room temperature.

Heat a non-stick skillet over medium heat and lightly grease it.

Pour ½ cup of batter into the pan, swirling to coat evenly. Cook for about one minute until edges lift; flip and cook for another minute.

Stack cooked crêpes on a warm plate while repeating with remaining batter.

Fill crêpes with desired sweet or savory fillings, fold or roll, and serve warm.