Roast Beef Sandwich Recipe

Slow Roast the Beef

Preheat your oven to 325°F (163°C). Season the beef roast generously with salt and black pepper. Place it in a roasting pan and roast for about 3 hours or until it reaches an internal temperature of 135°F (57°C) for medium-rare. Let it rest for 20 minutes before slicing.

Sauté Onions and Peppers

In a skillet, heat the olive oil over medium heat. Add the sliced onion and bell pepper, and sauté until they are soft and caramelized, about 10-15 minutes. Season with salt and pepper to taste.

Prepare Sandwiches

Spread horseradish sauce on one side of each slice of sourdough bread. Layer the sliced roast beef, sautéed onions, bell peppers, and gruyere cheese on half of the bread slices. Top with the other half of the bread.

Grill the Sandwiches

Heat a grill pan or skillet over medium heat. Grill the sandwiches for about 4-5 minutes on each side, or until the bread is golden brown and the cheese is melted.

Make Au-Jus

In a saucepan, heat the beef broth over medium heat until warmed through. Serve alongside the sandwiches for dipping.