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5.0 from 3 votes

Roast Beef Sandwich

This epic Roast Beef Sandwich recipe features a buttery, toasted bun piled high with layers of roast beef and cheese, plus fresh tomatoes, onions, and leafy greens - all with a creamy, tangy sauce. This classic sandwich is endlessly adaptable, and I offer lots of suggestions for mixing it up!

Prep Time
15 mins
Total Time
15 mins
Servings: 4 servings
Calories: 796 kcal
Course: Dinner
Cuisine: American

Ingredients

  • 4 sturdy buns, sliced in half (we use Kaiser buns)
  • ¼ cup unsalted butter

  • ¼ cup good quality mayonnaise

  • ¼ cup tartar sauce
  • 24 ounces roast beef, thinly sliced
  • 1 small red onion, thinly sliced

  • 1 large tomato, thinly sliced
  • 8 lices Swiss cheese
  • 1 cup arugula leaves
  • ½ cup microgreens

Instructions

    Cup of Yum
  1. Heat a large skillet or griddle over medium heat.
  2. Spread butter on the cut sides of each bun. Place the buns, buttered side down, on the preheated skillet. Toast the buns until golden brown and crispy. Remove from heat. 
  3. In a small bowl, combine the mayonnaise and tartar sauce. Spread this sauce on the bottom halves of the toasted buns. 
  4. Layer thinly sliced roast beef on top of the sauce on each bottom bun. 
  5. Top the roast beef with slices of red onion, tomato, and cheese. 
  6. Add arugula and microgreens on top of the cheese. 
  7. Cover each sandwich with the top halves of the toasted buns - and enjoy right away.
  8. If desired, to make a hot roast beef sandwich: heat the assembled sandwiches in a 350°F preheated oven for a few minutes to warm the sandwich and melt the cheese.

Notes

  • Feel free to customize your sandwiches with additional condiments or toppings of your choice, such as pickles, mustard, or avocado slices - see all my suggestions in the post!

Nutrition Information

Serving 1 Calories 796kcal (40%) Carbohydrates 32g (11%) Protein 53g (106%) Fat 50g (77%) Saturated Fat 22g (110%) Polyunsaturated Fat 24g Trans Fat 1g Cholesterol 176mg (59%) Sodium 1973mg (82%) Fiber 3g (12%) Sugar 7g (14%)

Nutrition Facts

Serving: 4servings

Amount Per Serving

Calories 796

% Daily Value*

Serving 1
Calories 796kcal 40%
Carbohydrates 32g 11%
Protein 53g 106%
Fat 50g 77%
Saturated Fat 22g 110%
Polyunsaturated Fat 24g 141%
Trans Fat 1g 50%
Cholesterol 176mg 59%
Sodium 1973mg 82%
Fiber 3g 12%
Sugar 7g 14%

* Percent Daily Values are based on a 2,000 calorie diet.