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Slow Cooker

Slow Cooker Flank Steak Au Jus Sandwiches

Juicy flank steak, beefy sauce and caramelized onions come together easily to create this delectable hoagie sandwich. The flank steak is tender, moist and flavor-packed, making it a great base recipe not only for these sandwiches but also for any recipe that calls for shredded beef, such as Italian sandwiches or chili.

Prep Time:

10 mins

Cook Time:

10 mins

Total Time:

20 mins

Servings:

4

Ingredients

  • 1 ½ tablespoons olive oil
  • 2 tablespoons dark brown sugar
  • ¾ teaspoon kosher salt
  • 1 teaspoon ground cumin
  • 1 teaspoon paprika
  • 1 teaspoon black pepper
  • 3 garlic cloves, grated (about 1 tablespoon)
  • 2 pounds flank steak, trimmed
  • 1 large onion (about 13 3/8 ounces), cut into thin slices
  • 1 (12 ounce) bottle beer (such as yuengling lager)
  • 2 tablespoons lower-sodium soy sauce
  • 1 bay leaf
  • 1 teaspoon fresh thyme leaves
  • 2 teaspoons cornstarch
  • 1 teaspoon water
  • 8 small whole-wheat hoagie rolls, split and toasted

Directions

  1. Stir together the olive oil, brown sugar, salt, cumin, paprika, pepper, and garlic, forming a paste; rub the paste into both sides of the steak, using all of the mixture. 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.
  2. Transfer the steak and onions to a platter, reserving the cooking liquid in the slow cooker; cover the steak and onions with aluminum foil to keep warm.
  3. Pour the reserved cooking liquid through a wire-mesh strainer into a medium saucepan, discarding the solids. Bring to a boil over high, and boil until the sauce is reduced to about 1 1/2 cups, about 12 minutes. Stir together the cornstarch and water in a small bowl; drizzle into the sauce, and whisk until blended. Reduce the heat to medium-high, and simmer, stirring often, until thickened, about 1 minute. Shred the steak with 2 forks. Divide the steak and onions among the toasted rolls. Pour the sauce into dipping bowls, and serve with the sandwiches.