Ribeye Steak With Creamy Mustard Sauce

Ingredients

• 2 ½ lb ribeye steak, room temperature
• 1 teaspoon kosher salt, plus more to taste
• 1 teaspoon black pepper, plus more to taste
• 1 tablespoon olive oil
• 1 ½ tablespoons unsalted butter, divided
• 1 small shallot, diced
• 1 ½ tablespoons capers in brine
• ¼ cup dry white wine
• 2 tablespoons dijon mustard
• 2 tablespoons heavy cream
• thinly sliced chive, for garnish
• potato, roasted, for serving
• side salad, for serving