Preheat the oven to 275 degrees F.Cream together the butter, sugar and flour with a hand mixer or stand mixer.Fold in the pecans and salt and stir until combined. The mixture will be crumbly but will stick to itself.Roll the dough into small balls (about 1/2-inch across) and place on an ungreased baking sheet. (You can wet your hands to keep the dough from sticking to you.)Bake at 275 degrees F for 45 minutes.Let cool completely on the baking sheet before transferring to an airtight container. These pecan puffs keep for up to a week on the counter or in the pantry.To make the chocolate sauce: Place chocolate chips in a microwave safe bowl. Microwave for 1 minute. Stir and microwave in 30 seconds intervals until chocolate is melted and can be stirred together. Drizzle melted chocolate over cooled pecan balls or dunk balls in the chocolate sauce.