Slow-Cooker Flank Steak Au Jus Sandwiches
Juicy flank steak, beefy sauce and caramelized onions come together easily to create this delectable hoagie sandwich. Place the onion slices in a 5- to 6-quart slow cooker; top with the steak. Pour the beer and soy sauce over the steak. Add the bay leaf and thyme. Cover and cook on LOW until the steak is tender, 7 to 8 hours. Pour the reserved cooking liquid through a wire-mesh strainer into a medium saucepan, discarding the solids....