Chill your bowl and beaters: To whip the cream effectively, place your mixing bowl and beaters in the freezer for about 10 minutes (this helps to achieve those fluffy peaks).
In a large mixing bowl, combine heavy cream and powdered sugar. Start on low speed to prevent sugar from flying everywhere, then gradually increase to medium-high.
Whip the cream: Continue beating until soft peaks form. Be careful not to over-whip!
Add pumpkin puree, vanilla extract, and pumpkin pie spice: Gently fold in these ingredients until just combined. A spatula works best for this to ensure you don't lose the airiness of the whipped cream.
Taste and adjust: If needed, add more powdered sugar for sweetness, or more pumpkin spice for flavor.
Serve immediately or chill: Enjoy your Pumpkin Whipped Cream on desserts or beverages, or store it in the refrigerator until needed.