Mix all ingredients, except butter, in a blender until a smooth batter is achieved. Heat a 9-inch crepe pan over medium high heat. Brush the pan with the melted butter and pour 2 ounces of batter into the pan. Spread the batter by swirling the pan until the bottom is coated. Cook until the crepe is browned. Use a spatula to pick up one side of the crepe, grab it with your fingers and flip the crepe. Cook for 30 seconds more and then place crepe on a platter.