Cut the cheese into ½ inch cubes and place onto a parchment or silicone mat lined baking sheet.
Cover the cheese with a light kitchen towel and allow it to sit in a dry place for 3 days. You want the cheese to be completely hardened before baking. See note drying in a refrigerator instead.
Preheat the oven to 350 degrees.
Bake the hardened cheese for 5-8 minutes until it pops up like popcorn and gets golden brown on the edges.
Allow the keto popcorn to cool and serve.