Roast Beef, Caramelized Onion, Havarti, and Arugula Sandwich on a Focaccia Roll
Servings 4
Equipment
- Large skillet
Ingredients
- 1 tbsp butter or olive oil
- 1 yellow onion sliced thinly
- Sea salt to taste
- 1-2 tbsp water if needed
- Focaccia rolls sliced in half
- Horseradish mustard to taste
- Mayonnaise to taste
- Roast beef thinly sliced
- Havarti cheese slices
- Arugula
Instructions
- Preheat the oven to 350 degrees.
- Melt the butter in a large skillet over medium heat. Add the sliced onions and cook, stirring often, for 20-30 minutes, or until caramelized and golden brown. Season with sea salt, to taste. Side Note: If the skillet gets dry, add a tablespoon or two of water.
- Place the sliced focaccia bread directly on the rack in the oven and toast for about 3-5 minutes.
- Slice the leftover roast beef into thin slices.
- Spread mayonnaise and horseradish mustard, to taste, on the toasted roll.
- Place the roast beef on the bottom bun then top with a slice of Havarti.
- Place back in the oven and cook until the cheese melts, about 3-4 minutes.
- Remove the sandwich from the oven and place a large spoonful of caramelized onions on top of the melted cheese.
- Add the arugula and place the remaining half of the roll on top.
- Serve immediately. Enjoy!