Roast Beef, Caramelized Onion, Havarti, and Arugula Sandwich on a Focaccia Roll

Name: Roast Beef, Caramelized Onion, Havarti, and Arugula Sandwich on a Focaccia Roll
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Yield: 4 serving
Ingredients: 1 tbsp butter or olive oil; 1 yellow onion; sea salt; 1-2 tbsp water; Focaccia rolls; horseradish mustard; mayonnaise; roast beef; Havarti cheese slices; arugula

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Prep Time
10 mins
Cook Time
10 mins
Total Time
40 mins
Servings
4
Course
Main Course, Lunch
Cuisine
American

Roast Beef, Caramelized Onion, Havarti, and Arugula Sandwich on a Focaccia Roll

Iris Warren

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Enjoy something delicious and satisfying with this easy-to-make recipe.

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Ingredients

Servings

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

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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!