Brown the butter: in a small saucepan, heat butter over medium-high heat, whisking continuously. The butter will foam up and then settle down – keep whisking. After a few minutes, butter will start to change color and smell – once you smell a nuttiness, rather than just delicious butter smells, and start to see some brown flecks rising to the top of the bubbles – or in the bottom of the pot (depending on color of your pot) – remove from heat immediately. Careful not to let the butter burn! Pour into a heat-safe bowl and set aside to cool for a few minutes, while you get the rest of the bread together.