Insert steel blade in food processor. Process nuts, a half cup at a time, until finely ground. Combine with remaining ingredients in a small saucepan and stir and blend over moderate heat until butter is melted. Drop by teaspoonfuls onto a greased and floured baking sheet. Bake in a preheated 180ºC oven 6 to 8 minutes. Remove carefully with a spatula to a rack to cool. Yields about 2 dozen cookies. ----