There may not be anything better than using the leftover roast beef to make a sandwich. This sandwich is served cold with horseradish and cheese! Perfect for those summer picnics, parties, or even tailgates. Plus, you’ll definitely need two hands to eat this beefy sandwich!
Prep Time 10 minutesminutes
Cook Time 20 minutesminutes
Total Time 30 minutesminutes
Servings 6
Equipment
Non-stick Skillet
Mixing Bowl
Ingredients
Toppings
1red onion sliced into rings
2teaspoonsolive oil
1tablespoonbalsamic vinegar
Arby’s Sauce
2tablespoonscreamed horseradish or 1 tablespoon freshly grated horseradish
¾cupmayonnaise see note
¾cupsour cream see note
2tablespoonsmustard Dijon or yellow
For the Sandwich
6kaiser rollsor similar buns
1poundroast beefsliced
6slicesprovolone cheeseor Swiss cheese
1cuparugulaor microgreens
1large tomatosliced
salt and pepperto taste
Instructions
Saute the Onions (You can skip this step if you prefer to use raw onions): Place a large skillet over medium heat. Add the oil and onions. Sauté for 10 to 12 minutes stirring regularly, adding the balsamic vinegar halfway through. Once the onions are nicely brown and caramelized, remove from heat.
Make the Sauce: In a medium bowl, mix together the horseradish, mayo, sour cream and mustard. Set aside.
Prepare to Assemble: Set up an assembly station by laying out the roast beef, cheese slices, arugula, sliced tomato, onions, sauce and buns.
Toast the Buns: Preheat the oven or griddle to 350°F. Brush the buns lightly with olive oil. Then put them in the hot oven or griddle for 2 to 3 minutes.
Assembly: Spread the horseradish cream sauce onto the bottom buns. Sprinkle on some arugula or greens. Add several slices of roast beef followed by some salt and pepper. Layer on the caramelized onions, cheese, tomatoes and a few more greens. Add the tops of the buns and serve.
Notes
Onions: If you are in a rush, you can skip sauteeing the onions and put them on raw.
Mayo: Use real mayo instead of whipped topping for the best taste. For a lighter option, you can use light mayo.
Sour Cream: You can use light sour cream for a lighter option.