1Heat butter or margarine with brown sugar and nuts in a saucepan until melted. Spread in the bottom of the baked pie shell. Bake at 450 degrees F (230 degrees C) for 5 minutes. Cool.
2Prepare vanilla pudding mix with milk as directed for a pie; cool for 5 minutes, stirring occasionally. Measure 1 cup, cover with waxed paper, and chill thoroughly. Pour remainder into pie shell. Chill.
3Fold 1/3 cup whipped topping into the 1 cup reserved pudding. Spread over nuts in pie shell. Chill. Garnish with remaining whipped topping and chopped pecans.