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Ingredients
Scale
- 4 tablespoons butter
- 2 onions, thinly sliced
- 1 ½ teaspoons fresh thyme, minced
- Salt and pepper, to taste
- 12 Hawaiian dinner rolls
- 1 pound deli sliced roast beef
- 12 slices Swiss cheese
- 3 tablespoons butter (for brushing)
- 2 tablespoons Dijon mustard
- 1 ½ tablespoons dried onion soup mix
- Au jus gravy mix (prepared when serving)
Instructions
- Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
- Melt 4 tablespoons of butter in a skillet and caramelize the onions for about 15 minutes; season with thyme, salt, and pepper.
- Slice the Hawaiian rolls in half and place the bottom halves on the baking sheet.
- Layer roast beef, Swiss cheese, and caramelized onions on the bottom buns.
- Mix 3 tablespoons melted butter with Dijon mustard and brush it on the top buns; sprinkle with onion soup mix.
- Tent with foil and bake for 15-20 minutes until cheese is melted; remove foil and bake an additional 5 minutes for crispy tops.
- Serve with au jus for dipping.
Notes
Ensure the onions are well caramelized for maximum flavor.
Feel free to customize with different cheeses or ingredients.
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Category: Appetizer
- Method: Baking
- Cuisine: American
Nutrition
- Calories: 250
- Sugar: 2
- Sodium: 540
- Fat: 14
- Saturated Fat: 7
- Unsaturated Fat: 5
- Trans Fat: 0
- Carbohydrates: 24
- Fiber: 1
- Protein: 12
- Cholesterol: 45