https://www.simplyrecipes.com/easy-steak-au-poivre-recipe-8785647
Ingredients
1 (1 1/2 to 2-pound) flank steak
2 tablespoons peppercorns, black or any combination of colors
Kosher salt, to taste
2 tablespoons vegetable or grapeseed oil
1 tablespoon unsalted butter
1 large shallot, minced, or 3 tablespoons minced onion
2 tablespoons Cognac, other brandy, or sherry (if you’re alcohol-free, use apple cider vinegar)
1/2 cup low-sodium beef broth or stock
1/4 cup heavy cream
1 sprig fresh thyme or 1/2 teaspoon dried leaves
Finely chopped fresh parsley, for garnish, optional