If you don't want to buy sketchily-sourced pumpkin sauce off eBay, I understand. This isn't as good, I'm not gonna lie. But it's still better than most pumpkin cream copycat recipes you'll see online.
Add all ingredients to a bowl.
Pour on top of your cold brew (or iced coffee of choice) and sprinkle the pumpkin pie spice on top. If you don't have pumpkin pie spice, you can recreate it by combining ground cinnamon, nutmeg, cloves, and ginger.
Enjoy your almost-as-good pumpkin cream, feeling smug AF that you're not one of those crazies who literally bought a jug of pumpkin spice sauce off the dark web.