Mom's Nut Balls - Dinner With Julie

Ingredients

• 1 cup butter, at room temperature
• 1/2 cup icing sugar
• 1 tsp. vanilla
• 2 cups flour
• 1/4 tsp. salt
• 1 cup finely chopped hazelnuts, walnuts, almonds and/or pecans, toasted
• extra icing sugar, for rolling