Beef Au Jus Sandwiches

12
Servings

Ingredients

  • 1 large onion, sliced
  • 1 (14 ounce) can beef broth
  • 4 lb s beef boneless beef rump roast, fat trimmed
  • 2 Tablespoon balsamic vinegar
  • 1 (2/3 ounce) envelope Italian salad dressing mix
  • 1/2 Teaspoon salt
  • 1/4 Teaspoon black pepper
  • 12 hoagie rolls, split
  • 1 large green bell pepper, thinly sliced
  • 12 slices provolone cheese, cut in half