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Turn last night’s leftovers into a satisfying and tasty lunch! This hot roast beef sandwich is topped with creamy melted cheese and fresh and flavourful toppings.

Serve this sandwich with Chipotle Mayo Roasted Potato Wedges!

Hands holding hot roast beef sandwich
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One of the great joys of a holiday meal or roast dinner is pulling out the leftovers the next day. There are many ways to turn one meal into so many more, each more interesting and exotic than the last!

But when it comes to lunch the next day, all I really want is a seriously good sandwich. and for that, it’s hard to beat beautiful roast beef!

Top down view of the sandwich

Why you’ll love it

Roast beef has a rich, savoury flavour and when thinly sliced carries beautiful moisture and depth along with it. It creates the perfect foundation for layering other flavours to make an interesting, satisfying sandwich.

For this hot roast beef sandwich, I’ve added caramelised onions and peppery arugula, along with stunning marinated red peppers. A creamy sauce made of mayonnaise, garlic and horseradish pulls it all together.

Top the whole thing with a creamy melted cheese and you have a sandwich to remember! Choose your favourite cheese as almost anything will do. I used Edam because I love how it melts.

Hot roast beef sandwich on a wooden cutting board

What you’ll need

I find that roast beef can be a bit chewy in a sandwich if it isn’t thinly sliced. There are specialised tools for cutting thin slices, but a good, well sharpened knife will do the job as well.

For perfectly melted cheese on a sandwich like this, I prefer to place it in a preheated oven under the broiler. The cheese will melt in just a couple of minutes. An air fryer will do a great job as well.

Top down view of the ingredients on a cutting board

Recipe Tips and Notes

  • Thinly sliced roast beef is ideal for sandwiches. Make sure your This is an affiliate link.knife is very sharp to get the best results.
  • Although the sandwich spread can be made right when needed, it is even better when the flavours have the chance to meld together over time. Making the day before and placing in your fridge will give the best results.
5 from 1 vote

Hot Roast Beef Sandwich

Prep: 10 minutes
Cook: 3 minutes
Total: 13 minutes
Servings: 4
Thin roast beef with melted cheese and tasty sauce on a tasty ciabatta.
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Ingredients 

  • 16 slices roast beef
  • 1 ciabatta loaf
  • 1/2 cup mayonnaise
  • 1 tsp horseradish
  • 1 marinated red pepper from a jar, minced
  • 1 clove garlic
  • 1 tbsp This is an affiliate link.olive oil, extra virgin
  • 1 onion, sliced
  • 1 tsp apple cider vinegar
  • 4 slices cheese, I used Edam
  • 1 cup arugula

Instructions 

  • Peel and thinly slice the onions. In a large pan, cook the onions in olive oil over low heat, add a teaspoon of apple cider vinegar half way through. It will take 15-20 minutes for them to fully caramelise. Turn the oven to full with the broiler on.
  • Make the sandwich spread by adding mayonnaise, horseradish and minced garlic to a bowl and stirring to combine. Cut the marinated red pepper into small pieces.
  • Spread the horseradish mayonnaise to the sliced ciabatta and add layers of roast beef. Top with the caramelised onions and marinated red pepper pieces. Place the cheese slices on top.
  • Place in the preheated oven under the broiler for 2-3 minutes, keeping a close eye to make sure that it does not burn. Remove when the cheese is melted. Add arugula and serve hot.

Nutrition

Calories: 572kcal | Carbohydrates: 60g | Protein: 39g | Fat: 20g | Saturated Fat: 7g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 7g | Trans Fat: 0.01g | Cholesterol: 81mg | Sodium: 2741mg | Potassium: 428mg | Fiber: 2g | Sugar: 2g | Vitamin A: 354IU | Vitamin C: 58mg | Calcium: 479mg | Iron: 3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Tried this recipe?Let us know how it was!
Julia from Vikalinka

About Me

Julia Frey is a London based recipe developer and photographer. Julia founded Vikalinka in 2012 with the main mission to provide her readers with delicious and accessible everyday recipes, which could be enjoyed by everyone.

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Recipe Rating




2 Comments

  1. Elaine says:

    5 stars
    We Enjoyed rare, beef tenderloin on Christmas Day… Sandwiches on Boxing Day – left over thinly sliced,Beef Tenderloin these slices cut into strips and mixed with creamy horse radish…add jarred red peppers, wrap it all in slices of parmesan cheese; add to (to die for) buttered Italian buns; slip this under your grill just long enough to warm and soften the cheese…. Goes deliciously with a pint of ale… milk for the kids…
    HAPPY NEW YEAR, JULIA… MAY HEALTH, HAPPINESS AND PROSPERITY BE WITH YOU AND YOUR FAMILY, NOW AND ONWARD….
    GOD BLESS…

    1. Julia Frey (Vikalinka) says:

      Thank you so much, Elaine!! Happy New Year!