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Roast Beef Crostini with Dijon Horseradish Sauce

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 10 reviews
  • Author: Nicole Triebe
  • Prep Time: 5 minutes
  • Cook Time: 15 minutes
  • Total Time: 20 minutes
  • Yield: 6-10 1x
  • Category: Appetizer
  • Method: Bake
  • Cuisine: American


Delicious and savory roast beef crostini with a creamy horseradish sauce! This simple crostini appetizer is perfect for holiday entertaining or your next dinner party! 



1/4 cup mayo

1/4 cup sour cream

1 tbl horseradish

4 tsp Dijon Mustard

Salt and pepper to taste

Crusty Baguette

1/2 pound Roast Beef, thinly sliced

Microgreens or chives


Freshly grated parmesan cheese


  1. Preheat oven to 350 degrees. Arrange your baguette slices on two large rimmed baking sheets; brush both sides with oil, and season with salt and pepper.
  2. Bake until golden, 15 to 20 minutes, rotating sheets halfway through (if undersides are not browning, turn crostini over once during baking).
  3. Spread a tablespoon of the horseradish dijon onto a toast.

  4. Top with a slice of roast beef.  

  5. Top with a small dollop of more Dijon Horseradish sauce, a few capers and some microgreens if you’d like (these are just for presentation).  

  6. Add a few crumbles of freshly grated parmesan cheese for another layer of flavor (optional)