01 -
Warm a small pan on medium heat. Toss in the butter and let it fully melt.
02 -
Stir together the beef broth, mustard, cream, peppercorns, and salt until it’s all smooth and combined.
03 -
Keep stirring while the sauce bubbles lightly for 5-10 minutes. It’s ready when it sticks gently to the back of your spoon.
04 -
Take the pan off the heat to stop cooking. Pour the sauce over your steak or move it to a dish for serving.