I always start by measuring out my powdered milk, confectioners' sugar, cocoa powder, pumpkin pie spice, cornstarch, and salt into a large bowl. Getting the measurements right here really does make a difference in the final texture. I like using a kitchen scale for extra accuracy, though measuring cups work just fine too.
Once everything is in the bowl, I whisk it all together until it looks completely uniform in color. This step matters more than people think, since clumps of cocoa powder or spice can leave your drink tasting uneven. I usually whisk for a good minute or two to be safe.
After whisking, I transfer my hot cocoa mix into an airtight container or a cute mason jar. Stored in a cool, dry pantry, it stays fresh for up to a year, which makes it perfect for gifting or stocking up before the holidays hit.
When I'm ready for a cup, I heat about a cup of milk or water on the stove or in the microwave until it's steaming but not boiling. Using milk instead of water gives the drink a noticeably richer, creamier texture that I personally prefer.
I scoop about ¼ cup of my dry mix into a mug, then pour the hot liquid right over it. Stirring continuously helps the powder dissolve completely, leaving you with a smooth, lump-free cup of cocoa in under a minute.
Finally, I finish my mug with a handful of mini marshmallows or a swirl of whipped cream. A light dusting of extra pumpkin pie spice on top makes it look just as good as it tastes.