In a blender, blend together egg, milk, flour and salt until batter is smooth.

Heat a crepe pan or a small nonstick skillet over medium heat and melt a pat of butter to coat pan. Ladle in about 1/4 cup of batter so the batter coats the bottom of the pan. Swirl batter to evenly coat the pan. Lower heat to medium. Cook for one minute then flip and cook for another 30 seconds or until crepe is browned.

Remove from pan and fold. Keep on warm platter then repeat with remaining butter and batter.

Fill the crepes with desired fillings and serve.