Brown Butter is butter that has been cooked and browned. You start off by melting the butter in a saucepan, as it boils, sputters and foams slightly, the milk solids cook, resulting in brown bits at the bottom of the pan. The butter turns a lovely hue of gold and it smells rich and nutty. You can use it in place of regular butter and can be used in both sweet and savory recipes. Just be careful not to burn the butter or youโll have to start over.