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Easy to Make Roast Beef Sandwich with Pickled Red Onions

This Roast Beef and Pickled Red Onion Sandwich recipe post is sponsored by Maille. All opinions are my own.

Some days for dinner, I have to admit, I need a break from cooking. That’s when sandwiches end up on our dinner menu. Sandwiches like this delicious and easy-to-make roast beef sandwich recipe with pickled red onions, plus finish it off properly, a nice bit of Maille Dijon Originale, yum!

Ideal for dinner, lunch, or picnics, enjoy this roast beef sandwich recipe with pickled red onions.

Best sandwich recipe

With only 5 easy-to-find ingredients, this is an ideal recipe that makes a great dinner idea for tasty last-minute solutions or weekday meal planning needs.

Open up my refrigerator and you’ll be sure to find that I always have Maille Dijon Originale Mustard on hand, it’s a must-have staple in my kitchen, and it has the ability to add depth of flavor to savory dishes. With a creamy texture, this robust Dijon will enhance your dishes from sandwiches and marinades to appetizers, soups, and more.

Ingredients for beef sandwiches

When added to this easy-to-make sandwich, Maille Dijon Originale Mustard takes your meal from it tastes good to oh wow, amazing!

To find my favorite Maille Dijon Originale Mustard and other Maille products, you can order them here, or look for Maille in your local grocery store.

Join the Maille Facebook Group, the My Maille Community, it’s one of the most successful Food Groups you’ll find on Facebook, with more than 70,000 members. Joining is a fun way to discover new recipes and make new friends.

Maille Dijon Originale Mustard jar

What you’ll need:

  • Roast Beef from the deli
  • Maille Dijon Originale Mustard
  • Pickled Red Onions
  • Arugula or baby mixed greens
  • Baguettes, ciabatta, or your favorite artisan sandwich bread
Making an easy roast beef sandwich

How to Make an Easy Roast Beef Sandwich with Pickled Red Onions:

Step One:

  • Simply gather your ingredients, the deli roast beef, Maille Dijon Originale Mustard, a jar of quick pickled red onions, mixed baby greens or arugula, and your bread.

Step Two:

  • Slice the bread, if needed, any way you prefer.

Step Three:

  • Start layering your ingredients. I like to spread the Maille Dijon Originale Mustard first, followed by the greens, sliced roast beef, and top off with the drained pickled red onions.

Step Four:

  • If you prefer, you can substitute the pickled red onions for freshly sliced or caramelized onions. You can also use any deli meat you would enjoy, from ham, turkey, or chicken slices. Serve straight away, and enjoy.
Spoonful of Maille Dijon Originale Mustard

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Board with made sandwiches

Other Tasty Recipes to Try:

How to Build this Easy to Make Roast Beef Sandwich:

Best sandwich recipe

Easy to Make Roast Beef and Pickled Red Onions Sandwich

Yield: 4 - 6
Prep Time: 5 minutes
Total Time: 5 minutes

Easy to make and perfect for lunches, simple weeknight dinners, picnics, and more, Roast Beef and Pickled Red Onions Sandwiches.


  • 16 ounces deli roast beef, sliced
  • 2 - 3 Maille Dijon Originale Mustard
  • Handful of arugula or other baby lettuce
  • Pickled red onions
  • 1 - 2 baguettes, sliced


  1. Prepare the ingredients. Slice the bread.
  2. Start with spreading the Maille Dijon Originale Mustard, then top with lettuce, a few slices of roast beef, and finish off with some pickled red onions.


You can substitute the pickled red onions for freshly sliced red onions, or caramleized onions.

You can use sliced turkey, ham, or chicken if preferred in place of the roast beef.

Any nice crusty bread will work, enjoy this sandwich with your favorite bread.

Nutrition Information:
Yield: 4 Serving Size: 1
Amount Per Serving: Calories: 527Total Fat: 6gSaturated Fat: 2gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 29mgSodium: 1580mgCarbohydrates: 88gFiber: 5gSugar: 9gProtein: 29g

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