Ultimate Steak Sammies | Recipe Saver

Ingredients

• 1 (16-ounce, 1-inch-thick) New York Strip steak, boneless, can substitute hanger steak
• kosher salt, to taste
• ground black pepper, to taste
• 2 1/2 tablespoons extra-virgin olive oil, divided
• 2 large red onions, thinly sliced
• 1 tablespoon Dijon mustard
• 2 tablespoons unsalted butter, melted, divided
• 2 large or 4 medium focaccia or ciabatta buns, may substitute any similar soft but sturdy slider buns, split
• 1 cup baby arugula
• 6 ounces brie cheese, cut into thin slices
• 1/2 cup jarred fig jam