*NOTE* Do not walk away from butter as you are browning it. The butter will burn quickly once it starts to brown.
Place cubed pieces of unsalted butter in a light-colored pan. Turn the stove to medium heat. Using medium or medium-high heat will allow the butter to cook evenly.
Give it a few stirs or swirls of the pan until fully melted. Once the butter has melted, it will begin to foam and sizzle.
In about 5 minutes the butter will begin to turn golden brown and milk solids will begin to form at the bottom of the pan. Cook until you get a beautiful nutty aroma and the butter and milk solids have turned a beautiful dark amber color. Make to WATCH CAREFULLY as brown butter will burn quickly.
Immediately remove from the pan and pour into a heat-safe bowl to let cool. About 30 minutes.