Brown Butter (Buerre Noisette) is a type of clarified butter cooked over low heat until it turns a beautiful amber brown color. Browning butter gives foods a "nutty" flavor which can be used in cakes, cookies, sauces, and icings.
Place butter in a heavy-bottomed saucepan and slowly melt it over low heat.
Continue to cook the butter until it’s melted, browned, and fragrant—usually about 3-5 minutes. Stir frequently to avoid burning.
Brown butter turns a deep amber color and has a “nutty” aroma.