Fluffy Pumpkin Pie

1 envelope Dream Whip
1 3-oz pkg vanilla instant pudding
1 C pumpkin
2/3 C milk
3/4 tsp pumpkin pie spice (or 1/4 tsp each nutmeg, cinnamon, and ginger)
1 8" baked pie shell (pastry or graham cracker)

Prepare whip topping according to package directions.
Combine 1 cup of prepared whip topping with the pudding mix, pumpkin, milk and spices in a bowl for 1 minute with electric beaters on low setting. Pour into pie shell. Chill in fridge until set (2 hours). Garnish with remaining whip topping