Brown butter made in the microwave with no stovetop required. Just place cold butter in a microwave-safe bowl, cover, and cook until golden brown with nutty, toasted flavor. Use immediately or refrigerate for later.
Place in bowl: Put ½ cup cold unsalted butter into a 2-quart microwave-safe glass bowl (such as a Pyrex batter bowl).
Cover: Lay a paper towel over the top and set a microwave-safe plate over that to help prevent splatters.
Microwave: Cook on medium-high power (Level 8 or about 80%) for 7 minutes and 45 seconds. Adjust timing as needed based on your microwave wattage (mine is 1000W).
Let it rest: After removing from the microwave, let it sit undisturbed for 2–3 minutes. It will continue to darken.
Check color: The butter should be golden brown with dark specks at the bottom.
Optional : Strain browned butter through a coffee filter or fine mesh strainer if you prefer to remove the browned milk solids.
Storage: Refrigerate in a sealed jar for up to 4 weeks.