In a large mixing bowl, combine pudding mix and pumpkin pie spice.
Stir to combine with a rubber spatula.
Add canned pumpkin.
Using a hand mixer, beat on medium speed for 30-45 seconds until combined.
Scrape down sides and bottom with the rubber spatula to assure everything is mixed together.
Add whipped topping and beat on low until completely combined.
Refrigerate for at least an hour to overnight, covered, until ready to serve.