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    Home » Recipes » Beef Sandwich Recipes

    Roast Beef Sandwich Recipe

    Published: Aug 15, 2022 Modified: Aug 15, 2022 by Isabel Laessig

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    My Leftover Roast Beef Sandwich Recipe will change the way you use roast beef leftovers! This easy ciabatta sandwich recipe, complete with homemade remoulade sauce, cream cheese, and caramelized onions, is the best way to use leftover roast beef.

    two roast beef sandwiches on a table
    Jump to:
    • Best Roast Beef Sandwich
    • Roast Beef Sandwich Ingredients
    • How to Make a Roast Beef Sandwich
    • Leftover Roast Beef Sandwich Ideas
    • Roast Beef Sandwich Recipes FAQ
    • What to Serve with a Roast Beef Sandwich
    • 📌 Pin it for later!
    • 📋 Recipe
    • 💬 Reviews

    Best Roast Beef Sandwich

    Roast beef is one of my family's favorite dinners, whether we're enjoying a prime rib for the holidays or a pot roast during the week. But, with any roast beef recipe, there are always leftovers!

    One of my personal favorite ways to use leftover roast beef is to make a hot roast beef sandwich. There is nothing quite like a super flavorful sandwich with roast beef leftovers. Even better if you make the sauce and toppings from scratch!

    This leftover roast beef sandwich recipe is my secret to getting the most out of leftovers. I make it using a homemade remoulade sauce and caramelized onions, and it stands out as the best beef sandwich I have ever had. It's amazing for pot roast or as an idea for Prime Rib Leftovers.

    I guarantee you will feel the same way with just one bite!

    This sandwich is everything! We love the combo of the sauce, the onions when using up leftover roast beef!

    John via email
    roast beef sandwiches on a serving tray

    Roast Beef Sandwich Ingredients

    • Sandwich rolls of choice (I recommend ciabatta)
    • Cream cheese
    • Remoulade sauce
    • Caramelized onions
    • Tomato (optional)
    • Leftover roast beef - try one of my roast beef recipes
    roast beef sandwich ingredients

    How to Make a Roast Beef Sandwich

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

    Leftover Roast Beef Sandwich Ideas

    Remoulade sauce and caramelized onions are not the only way you can enjoy an incredible leftover roast beef sandwich recipe! Here are a few of my favorite variations on this leftovers sandwich:

    • Roast beef sandwich with horseradish sauce: Prepare creamy horseradish sauce to use as sauce for the sandwich (no cooking required). Pair with cheddar cheese and arugula, and enjoy cold or as a hot roast beef sandwich by warming it slightly.
    • Arby's roast beef sandwich/Arby's beef and cheddar: Make your homemade roast beef sandwich into one like the classic from Arby's by preparing it with a toasted sesame seed bun, cheddar cheese sauce (see: how to make cheese sauce), and copycat red ranch sauce. To make the red ranch sauce, combine ½ cup ketchup with 3 Tablespoons red wine vinegar or apple cider vinegar, ⅛ teaspoon garlic powder, ⅛ teaspoon onion powder, and 3 Tablespoons sugar. Double for enough to make 4 sandwiches. For best results, heat in a saucepan over medium-heat after mixing, then cool. Alternatively, use a variety of Country French dressing.
    • Au jus sandwich: Make it a french dip sandwich by heating au jus sauce for dipping and serving it hot with melted provolone, Swiss, or Mozzarella cheese.

    Roast Beef Sandwich Recipes FAQ

    What goes well with roast beef on a sandwich?

    Classic roast beef sandwiches include cheese and onions, which is what led to the creation of my roast beef sandwich recipe. Cream cheese is an incredible choice for a roast beef sandwich, paired with spicy remoulade sauce and homemade caramelized onions. Optionally, you can add a tomato. Serve it all on a sandwich roll such as ciabatta, and enjoy.

    What cheese goes best with roast beef sandwich?

    Roast beef pairs well with blue cheese, cheddar, asiago, fontina, gouda, and creamy cheese sauces. Cream cheese is an amazing replacement for sliced cheese on a roast beef sandwich, as it pairs perfectly with the beef.

    What cut of roast is best for roast beef sandwiches?

    You can use any leftover roast beef to make roast beef sandwiches. The typical choice for sliced roast beef on a sandwich is deli-style roast beef made using top loin, eye of round roast, and top sirloin. However, you can even use leftover pot roast to make this sandwich recipe.

    Is roast beef sandwich better hot or cold?

    Whether you enjoy a roast beef sandwich hot or cold is up to preference. You can serve this recipe as a hot roast beef sandwich by toasting it after assembling.

    What to Serve with a Roast Beef Sandwich

    • A nice green side salad
    • Serve with roasted vegetables, like carrots, broccoli, or asparagus on the side
    • Try adding steakhouse mushrooms
    • Serve with roasted potatoes or chips

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    📋 Recipe

    holding a roast beef sandwich
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    5 from 4 votes

    Best 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 mins
    Total Time10 mins
    Course: Main Course
    Cuisine: American
    Keyword: hot roast beef sandwich, leftover roast beef sandwich, roast beef sandwich recipe, roast beef sandwich recipes
    Servings: 1 sandwich
    Calories: 322kcal
    Author: Isabel Laessig

    Equipment

    • 1 Knife
    • 1 pan for making caramelized onions

    Ingredients

    • 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

    Instructions

    • 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

    Video

    Nutrition

    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

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    « Leftover Steak Recipes
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    About Isabel Laessig

    Isabel Laessig, better known as Family Foodie and the founder of the Sunday Supper Movement, is passionate about food and family! She is the author of the Boujee Steak Cookbook, and makes regular television appearances to spread her mission of bringing Sunday Supper back around the family table in every home.

    Reader Interactions

    Comments

    1. Lisa Vaas says

      September 01, 2022 at 4:41 pm

      Absolutely delicious. I didn't use cream cheese because I was in a hurry, but I can't imagine the sandwich suffered much because of the omission, since it was divine. The caramelized onions were a fabulous addition, but I should have chopped them up—I had leftover, thinly sliced rings of red onion from a make-your-own sandwich spread, and they would have been easier to eat if I'd chopped them up.

      Reply
      • Em Beitel says

        September 07, 2022 at 3:23 pm

        That is so great to hear! Thank you so much, Lisa! We're glad to hear you enjoyed it. Chopping the onions is a great idea.

        Reply

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