Buffalo is known for its Beef on Weck sandwiches which consist of thinly sliced roast beef piled high on salted and caraway-seeded Kummelweck rolls. This is the best (and easiest!) way to make it outside of the Buffalo area!
Preheat the oven to 300F. Line a baking tray with a silpat baking mat or parchment paper.
Place the Kaiser rolls on the prepared tray. Lightly brush the tops with eggwash and sprinkle on the salt and caraway seeds.
Bake the rolls for 7 minutes.
Make the Creamy Horseradish Sauce:
Mix together all ingredients in a bowl. Refrigerate until serving.
Heat the Beef:
Add the beef consommé to a small saucepan over medium heat. Once simmering, add the beef (working in batches) to the liquid to warm it up, about 2 minutes.
Assemble the Sandwiches and Serve:
Slice the Kimmelweck rolls in half, slather one side with horseradish sauce (if desired), and pile on the roast beef.
Serve immediately, along with warm beef consommé for dipping.
Notes
What Type of Beef to Use: For these sandwiches, you can roast your own cut of beef, such as top round or rump roast. Growing up in Buffalo, when my mom made these sandwiches for us she always used thinly sliced roast beef from the deli (it’s a huge time-saver!). I like to use Boar’s Head, which is available in my area at Publix.
Horseradish Sauce: This sauce is completely optional, and if you want you can just use prepared horseradish instead. I'll be honest, I'm not usually one for the flavor of horseradish, but I really like this creamy sauce. Sometimes I add it to my Beef on Weck, and sometimes I leave it off!
Make the Rolls the Same Day You Want to Eat These: After you transform a Kaiser roll into a Kimmelweck roll, I recommend eating it the same day for maximum freshness. Otherwise the top starts to lose its crispness.
This Sandwich is Best Enjoyed Right After Making It: Once you assemble the sandwiches, they’re best eaten right away so the au jus that’s on the beef doesn’t make them soggy.