Jun 09 2026
RestaurantsMondoRoast Beef* Recipe

Roast Beef* Recipe

Inspired by Mondo
Time2h
Serves4

house roasted beef, onion, cheddar, lettuce, tomato, and horseradish aioli

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Ingredients

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Roast Beef Sandwich

Method

Preparation Steps

  1. 1

    Roasting the Beef

    Preheat your oven to 350°F (175°C). Rub the beef roast with olive oil, then season generously with salt and black pepper. Place the roast in a roasting pan and cook in the preheated oven for about 1.5 to 2 hours, or until it reaches your desired doneness.

  2. 2

    Sautéing the Onion

    While the beef is roasting, slice the onion into thin rings. In a skillet over medium heat, add a tablespoon of olive oil and sauté the onion until it becomes translucent and golden brown, about 8-10 minutes. Set aside.

  3. 3

    Preparing the Vegetables

    Wash the lettuce thoroughly and pat dry. Slice the tomato into thick slices.

  4. 4

    Assembling the Sandwich

    Once the beef is roasted to your liking, remove it from the oven and let it rest for 15 minutes before slicing thinly against the grain. To assemble the sandwich, split the sandwich rolls in half. Spread 1 tablespoon of horseradish sauce on each half, then layer with sliced beef, sautéed onions, cheddar cheese, lettuce, and tomato slices.

  5. 5

    Serving

    Serve the roast beef sandwiches immediately, with any extra horseradish sauce on the side for dipping.

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