Heat half of the butter over medium-high heat in a 3-qt pot.
Put 3-4 popcorn kernels at the bottom and wait for them to pop.
Once popped add the rest of the kernels in an even layer. Cover the lid, remove from heat, and count to 30 seconds.
Add the pot back to the heat and give it a shake (all of the popcorn will pop at once!). Pro tip: leave the lid slightly open while popcorn pops to allow steam to escape!
Once the popping slows to a few seconds in between pops, remove from heat and immediately transfer to a large bowl.
In the same pot used for the popcorn, place the remaining butter. Add in the brown sugar, gingerbread spice, and salt. Stir until the butter is melted and the sugar is dissolved (if you like your popcorn heavy on the flavorings, double the ingredients listed under "for the flavorings" in the recipe).
Immediately drizzle the flavorings on your popcorn and toss to coat. Enjoy!