Smoked beef short rib sliders

Name: Smoked beef short rib sliders
Prep time: 15 min
Cook time: 6 h
Total time: 6 h 15 min
Cuisine: American
Ingredients: 4 lbs beef short ribs; 1 pack of Hawaiian Sweet rolls; 3 tablespoons of beef seasoning; 2 medium yellow onions thinly sliced; 1 tablespoon of salt, pepper, garlic mix; 1/2 cup beef broth; 12 slices of Swiss cheese; 1 packed of au jus seasoning; 1 tablespoon garlic paste (or minced garlic); 3 tablespoons melted unsalted butter; 1 tablespoon chopped parsley