This Roast Beef Sandwich Recipe is the perfect opportunity to use my Homemade Roast Beef and it's packed with amazing flavor! I love this delicious blend of fresh mozzarella, spicy horseradish, tangy banana peppers, and perfectly roasted beef. It is a sandwich I'd be happy to eat for lunch any day.
I love this combination of ingredients, it really makes the perfect sandwich. A nice soft toasted brioche bun to hold everything together is key. It squishes down just right without falling apart and is a great compliment to the spicy horseradish sauce.
The fresh mozzarella is really important, it helps mellow everything out and gives a great creamy layer to the sandwich. And while you can use store-bought roast beef, making your own is much more budget-friendly, be sure to give my recipe a try.
Use the JUMP TO RECIPE button at the top of the post, or scroll to the bottom of the post to see the full recipe card with ingredient measurements and instructions.
I like to first, lightly toast the bun, then spread a bit of Horseradish Cream Sauce on the top and bottom of the bun. This encompasses the spicy, tang of the sauce all around the roast beef.
Then add the cheese to the top bun and the pepperoncini peppers to the bottom. Finish it off by adding in 4-6 slices of roast beef, as desired. This is what is really great about making it at home, you can make it to your liking.
Top it up with the cheesy side of the bun and get ready for the best roast beef sandwich ever. I mean, in my opinion anyway! It's dang delicious regardless.
I also love to use the roast beef to make a bit of an Arby's copycat beef and cheddar. Use my Cheddar Cheese Sauce and warm the beef a bit in a pan on the stove, use the same brioche buns and smother it in the sauce. So good too!
Other great breads for this sandwich would be ciabatta or sub rolls. Brioche is just my preference.
If you aren't a big fan of spice, you could swap the horseradish for plain mayo. Dijonaise would also be great. It would still give some zip, without the heat.
I like the big, creamy slices of fresh mozzarella in this sandwich. Provolone or swiss could also be great if you prefer them.
Pepperoncini peppers are some of my favorite things ever, I'll just eat them alone. If you'd like a little more heat, use spicy cherry peppers, they'd be great with the beef!