Preheat the oven to 300° F and lightly butter a baking sheet.
In a mixing bowl, cream the butter and granulated sugar until smooth.
Stir in the pecans and flour.
Roll the dough into 3/4-inch balls.
Place the balls on the baking sheet.
Bake until the puffs are golden brown, about 30 minutes, checking often, as they burn easily.
Remove the puffs from the oven and roll in confectioners' sugar while hot, and again after the puffs have cooled.
Serve with lemon sherbet and fresh raspberries.