PREHEAT oven to 350°F. Place butter and sugar in large bowl; stir with wooden spoon until well blended. Gradually add flour, stirring until well blended after each addition. Blend in almonds. Shape tablespoons of dough into 2-inch crescents. Place on ungreased parchment- or foil-covered baking sheets.

BAKE 12 to 15 min. or until lightly browned. Cool on wire racks.

MELT chocolate as directed on pkg. Dip one end of each cooled cookie into melted chocolate; sprinkle with pistachios. Return to wire racks; let stand until set.