Cajun Roast Beef Sandwich with Horseradish Sauce

written by Jessica Chiasson Wood on October 20, 2012 in sandwich with 7 comments

This delicious sandwich is so easy to make and can be enjoyed year round. If your deli does not carry Cajun Roast Beef, you can get regular roast beef season with Cajun seasoning overnight and you get a similar taste.

4.0 from 1 reviews
Cajun Roast Beef Sandwich with Horseradish Sauce
Prep time
Total time
Recipe type: Sandwich
Cuisine: Cajun
  • Sandwich Buns
  • Deli Cajun Roast Beef, sliced
  • Sliced onions
  • Horseradish Sauce, ingredients below
  • 3 Tablespoons prepared horseradish
  • ¼ cup sour cream
  • 1 teaspoon Creole mustard
  • 1 Tablespoon mayonnaise
  • A splash of white wine vinegar
  • A pinch of cayenne
  • Salt to taste
  1. Start by making the sauce
  2. Place all of the ingredients into a medium mixing bowl and whisk until the mixture is smooth and creamy.
  3. Place in the refrigerator for at least 4 hours or overnight to allow flavors to marry.
  4. Lightly toast the buns
  5. Layer the bottom buns with roast beef and onions
  6. Top with horseradish sauce
  7. Enjoy!
Sauce can be stored in the refrigerator in an airtight container for 2 to 3 weeks.


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