Preheat your waffle cone maker according to manufacturer's instructions.

In a mixing bowl, mix together egg, egg white and salt on low speed just until well blended. Beat in the sugar on medium speed until the egg has lightened in color, about 1 minute. Add the flour and mix on low speed until blended and smooth, about 30 seconds. Add the melted butter and vanilla and mix on low speed just until blended, about 20 seconds.

Pour 3 tablespoons batter (I used a #28 scoop) in the center of the iron. Close the lid and cook for 1 minute before lifting the lid to check for doneness. Continue cooking until the desired color is reached.

Quickly remove the waffle from the iron onto a clean cloth towel. Use the towel to help lift and roll the waffle around the cone or bowl form. Hold the cone a few seconds to set the shape then place on a wire rock to cool.