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Roast Beef Crostini with Horseradish Cream is an easy to make appetizer that feel a little bit fancy. Thin slices of deli roast beef top toasty crostini along with a tangy horseradish cream, arugula, a sprinkle of Gruyere cheese and diced tomatoes. They are perfect for your next party and are SO GOOD!

Roast Beef Crostini are a favorite appetizer recipe! I recently made them for a holiday cocktail party as a group of neighborhood friends gathered to kickoff the Christmas season. My big tray of these 2 bite roast beef appetizers were a hit! They were gobbled up in no time at all.

Crispy yet soft crostini is topped with a tangy horseradish cream, peppery arugula, thin slices of roast beef, nutty Gruyere cheese and bright red tomato. The combination of flavors is DELICIOUS!

roast beef, bread, tomato, horseradish, mayonnaise, sour cream

the ingredients for roast beef crostini

a long baguette or skinny loaf of bread
extra virgin olive oil
kosher salt
sour cream
mayonnaise
prepared horseradish ~ Available at the grocery store and usually in the condiment aisle. It’s a jar of grated horseradish, vinegar and salt.
arugula ~ A leafy green with a peppery taste.
deli roast beef
shredded Gruyere cheese
diced tomato

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how to make crostini

I struck upon the perfect crostini recipe while sipping wine and nibbling on appetizers at my friend Linda’s home. She had the perfect crostini as it was slightly crisp and just a little soft. It is ideal accompaniment to my basil hummus, pimento cheese, creamy New England Clam chowder, and these roast beef crostini.

Cut a long thin loaf of bread into 1/2 inch slices. Brush with extra virgin olive oil and sprinkle with kosher salt.

In a hot cast iron skillet (a large sauté pan will work too), quickly toast each side of the bread slices. Flip the bread after a minute or so for the perfect crostini. Serve warm or at room temperature.

steps for making roast beef crostini

Toast the bread ~ In a hot pan, quickly toast slices of a long thin loaf that are brushed with extra virgin olive oil and sprinkled with kosher salt.
Mix the horseradish cream ~ In a small bowl, combine the sour cream, mayonnaise, and prepared horseradish.
Assemble the roast beef crostini ~ For each beef appetizer, spread some of the horseradish cream on a crostini. Top with a couple arugula leaves, about a half slice of deli roast beef, another dab of the horseradish cream, some shredded Gruyere cheese and diced tomato.

chef tips for making roast beef crostini

Use a thin loaf of bread for the crostini ~ for the perfect 2 bite appetizer, choose a loaf of bread that is about 2 to 3 inches in diameter.
Ask the deli counter to thinly slice the roast beef ~ My first choice for the roast beef is medium rare Boar’s Head which is available at most deli counters.
Substitute your favorite semi hard cheese ~ some tasty choices are pepper jack, Swiss, Gouda and sharp cheddar.
Make roast beef crostini in advance ~ There’s no need for last minute prep for these easy yet fancy appetizers. Make them up to 2 hours in advance. Store in the refrigerator covered lightly with plastic wrap.

cutting board toasted bread topped with sour cream horseradish and shredded cheese

If you make Roast Beef Crostini, I’d love hearing from you. Be sure to leave a comment and/or give this recipe a rating ~ I do my best to reply to all your comments. And snap a photo to post to Instagram. I’ll add the photos to my Insta stories as I love seeing all your creations.

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roast beef crostini with horseradish cream

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