INGREDIENTS
12
thin slices Deli roast beef
1/2 tsp
Garlic powder
1/2 tsp
Onion powder
1 tbsp
Parsley, fresh leaves
2
Sweet onions, large
2 tsp
Worcestershire sauce
1/2 tsp
Kosher salt
1 12 ounce package
Hawaiian sweet dinner rolls
2 tbsp
Butter, unsalted
8 oz
Gruyere cheese, grated