"Buttery cookies that just melt in your mouth! Every Thanksgiving I have to make like 3 batches and they go soooooo fast! They're great for Christmas goodies as well. They taste great at room temperature, in the fridge, or in the freezer."
Mix flour, butter, and 5 tablespoons confectioners' sugar together in a bowl until dough is golden; mix in walnuts. Roll dough into marble-sized balls; arrange on a baking sheet.
Bake in the preheated oven until balls are light golden brown, 10 to 12 minutes.
Place 6 cups confectioners' sugar in a bowl; roll balls in the confectioners' sugar until completely coated; place balls on a plate to cool completely. Roll balls in the confectioners' sugar a second time.