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    Home » Mains

    Roast Beef Sandwich with Boursin

    Originally Published: Feb 28, 2017 · Last Updated: May 19, 2018 by Ann · This post may contain affiliate links ·

    1.2K shares
    • 14
    Jump to Recipe Print Recipe

    The best roast beef sandwich. Perfectly cooked, juicy roast beef piled onto a chewy roll or baguette, slathered with Boursin cheese and topped with arugula.

    Disclosure: This post contains affiliate links. If you make a purchase through one of these links, I will make a small commission, at no cost to you. I will never recommend anything I don't personally love and use, and all thoughts and opinions are my own.

    Roast Beef SandwichAs sandwiches go, pretty much the only one that can make me pause when browsing a restaurant menu is roast beef. A roast beef sandwich always sounds terrific in theory. I can practically taste it just thinking about it. Too bad it is almost always better in my head. The WORST is when I take a chance and order it, and instead of the juicy, medium-rare sliced meat of my dreams, I get cold cuts. Dry, gray cold cuts.

    The other thing I struggle with is the toppings and condiments. I feel like mustard is the traditional condiment in a roast beef sandwich, but although a hot dog without mustard may be a travesty, I just can't get on board with it in my roast beef sandwich. Mayo is too wimpy flavor-wise, and let's not even talk about ketchup. Onions are a given, but are you supposed to put a tomato slice in there? Lettuce?

    Roast Beef Sandwich

    As is turns out, there is a right answer to these questions! THIS is my perfect roast beef sandwich. A perfectly cooked Sunday roast, sliced thin and piled onto ciabatta, baguette or any other chewy bread, slathered generously on both sides with herb and garlic Boursin cheese, with sliced red onions and a handful of arugula.

    I love using a cast iron skillet for roasts. It's the perfect size, easy to clean, and heats evenly. I don't sear this particular roast, but if you do, you can sear it in the cast iron pan and transfer straight to the oven since it's oven-safe. I use mine constantly and highly recommend this crazy affordable Lodge skillet.

    Another thing I always use when making a roast is this meat thermometer. Takes all the guesswork out of knowing when your roast is done.

    Roast Beef Sandwich

    If you're worried that making roast beef for the sole purpose of putting it in a sandwich is like wearing your prom dress to work, think again. A top round roast or other cheap cut is perfect for this, and you can get it in the oven in under 5 minutes. 35 minutes or so later, you have a perfect roast beef. If you insist, whisk a little red wine, beef stock and flour into the pan drippings and reduce to make a lovely gravy. Serve with mashed potatoes. But at least save the leftovers and make a sandwich!

    Perfectly cooked, juicy roast beef piled onto a chewy roll or baguette, slathered with Boursin cheese and topped with arugula.
    Roast Beef Sandwich

    Roast Beef Sandwich with Boursin

    Perfectly cooked, juicy roast beef piled onto a chewy roll or baguette, slathered with Boursin cheese and topped with arugula.
    4.67 from 6 votes
    Print Pin Rate Save Saved!
    Course: Lunch, Main Dish
    Cuisine: American
    Prep Time: 10 minutes
    Cook Time: 40 minutes
    Total Time: 50 minutes
    Servings: 4 sandwiches
    Calories: 654kcal
    Author: Ann Otis

    Ingredients

    • 1 1.5 lb (680 gram) beef round roast, tied with string
    • 2 garlic cloves
    • ¼ cup dijon mustard
    • black pepper, to taste
    • baguette, ciabatta, or other chewy roll
    • 1 5.2 oz (150 gram) package herb and garlic Boursin cheese
    • a few handfuls arugula or other greens
    • ½ small red onion, thinly sliced

    Instructions

    • Preheat the oven to 425 degrees F. Cut the garlic into several pieces, make small cuts here and there into the roast and stuff the garlic pieces in.
    • Sprinkle the meat with black pepper and slather with the mustard. Place the roast in a cast iron skillet or roasting pan and put in the oven.
    • Roast for 15 minutes. Reduce the heat to the 375 degrees F and cook until the meat registers 120-125 degrees F on a meat thermometer, about 25-30 minutes longer.
    • Remove from the oven and let rest for 10-15 minutes. Remove the garlic cloves and string. Slice thinly.
    • Assemble sandwich: Spread a sliced baguette or roll with Boursin cheese on both sides, and pile meat and arugula onto the bread. Top with other half of bread.

    Notes

    This makes a small roast, perfect for a few sandwiches or dinner for 3-4. To roast a larger piece of meat, simply increase the cooking time accordingly. A meat thermometer is your friend!

    Nutrition

    Calories: 654kcal | Carbohydrates: 35g | Protein: 55g | Fat: 31g | Saturated Fat: 15g | Cholesterol: 170mg | Sodium: 850mg | Potassium: 487mg | Fiber: 2g | Sugar: 2g | Vitamin A: 380IU | Vitamin C: 1.7mg | Calcium: 99mg | Iron: 6.2mg
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    Reader Interactions

    Comments

    1. Janette | Culinary Ginger

      April 18, 2018 at 6:00 pm

      5 stars
      A roast beef sandwich is one of my favorites and I usually melt Swiss or Provolone cheese on it, this is a must try.

      Reply
      • Ann

        April 18, 2018 at 6:04 pm

        Yum!

        Reply
    2. Emily

      April 18, 2018 at 4:16 pm

      You can never go wrong with a roast beef sandwich! This looks so amazing and I can't wait to try it out!

      Reply
      • Ann

        April 18, 2018 at 5:38 pm

        Thank you so much Emily! 🙂

        Reply
    3. Lizzie

      April 18, 2018 at 3:59 pm

      5 stars
      That's a really interesting flavour combination, I can imagine red onion and boursin really working with beef. Here in the UK though the favourite condiment for roast beef will always be horseradish, yum!

      Reply
      • Ann

        April 18, 2018 at 5:37 pm

        I made one recently with a horseradish mayo and you are right, it was so good!

        Reply
    4. Rebecca | Let's Eat Cake

      April 18, 2018 at 3:39 pm

      5 stars
      YUM!!!! I love this sandwich. Perfectly-cooked roast beef topped with greens and creamy cheese? Yes.

      Reply
      • Ann

        April 18, 2018 at 5:35 pm

        Thanks Rebecca! It is pretty awesome 🙂

        Reply

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    Ann from Our Happy Mess

    I'm Ann and I believe in balanced eating, homemade foods, and DESSERT. I love to cook, but I can't spend all day in the kitchen anymore, so what you'll mostly find here are simple, family-friendly recipes. I'm really happy you're here!
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