Meanwhile, melt butter in medium skillet on medium heat. Add nuts and sugar; cook and stir 4 to 6 min. or until sugar is melted and nuts are lightly toasted. Spread onto sheet of parchment paper; cool. While nuts are cooling, beat pudding mix, spice and milk in large bowl with whisk 2 min. Add pumpkin; mix well. Stir in 2 cups Cool Whip
. Refrigerate until ready to use.