Place a pan over medium heat. Add the butter and allow it to melt. Once melted, lower the temperature to medium-low and wait for the butter to start foaming on top.
Continue stirring and scrape the sides often – this is very important.
Wait for the butter to brown to your desired level, then remove it from the heat and allow it to cool for 5 minutes.
Pour the butter from the pan into a very large glass cup. Scrape all the pieces from the pan – those are the tasty bits!
Place the glass cup in the fridge for 15 minutes. Whip the butter using a hand mixer until creamy (about 2-3 minutes). Then, fill silicone molds with the butter and place them in the fridge for an hour. Enjoy!