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holding a roast beef sandwich
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5 from 4 votes

Roast Beef Sandwich

Learn how to make the best roast beef sandwich recipe using leftovers! My leftover roast beef sandwich is packed with flavor and easy to assemble.
Prep Time10 minutes
Total Time10 minutes
Course: Main Course
Cuisine: American
Keyword: roast beef sandwich, roast beef sandwich recipe, roast beef sandwich recipes, roast beef sandwiches
Servings: 1 sandwich
Calories: 322kcal


  • 1 Knife
  • 1 pan for making caramelized onions


  • 1 sandwich roll I recommend ciabatta
  • ¾ Tablespoon cream cheese
  • ¾ Tablespoon remoulade sauce
  • 1 Tablespoon caramelized onions
  • 1 slice tomato optional
  • 3-6 slices roast beef leftover roast beef or deli roast beef

See our Beef Temperature Chart for helpful tips on cooking any cut of beef!


  • Prepare caramelized onions and remoulade sauce (store-bought can also be used).
    Caramelized onions ready in a pan
  • Spread cream cheese on the bottom roll of your sandwich bun.
    ¾ Tablespoon cream cheese, 1 sandwich roll
    spreading cream cheese on a bun
  • Add slices of leftover roast beef, or leftover shredded roast beef, over the cream cheese.
    3-6 slices roast beef
    adding roast beef to sandwich
  • Top with caramelized onions, then tomato (optional).
    1 Tablespoon caramelized onions, 1 slice tomato
    adding caramelized onions to sandwich bun
  • On the top bun, spread remoulade sauce. Join the sandwich, cut in half, and serve!
    ¾ Tablespoon remoulade sauce, 1 sandwich roll
    spreading remoulade sauce on bun



Calories: 322kcal | Carbohydrates: 29g | Protein: 23g | Fat: 12g | Saturated Fat: 2g | Cholesterol: 53mg | Sodium: 1713mg | Potassium: 320mg | Fiber: 1g | Sugar: 1g | Vitamin A: 375IU | Vitamin C: 43mg | Calcium: 235mg | Iron: 2mg