Combine the flour, sugar and ground nuts in a mixing bowl. Blend in the butter with a spoon or pastry blender to form a dough. Chill for one to two hours.
Preheat oven to moderate (375°F.).
Roll out the dough on a lightly floured pastry cloth or board to one-eighth-inch thickness. Cut into two-inch circles with a floured cutter. Transfer to an ungreased cookie sheet. Bake for seven to ten minutes. Cool on a rack.
When cool, sandwich two cookies together with the filling. Spread the top with a thin layer of preserves, coat with the frosting, and sprinkle with the nuts.