Step 2

Season the beef with a little salt and plenty of pepper all around. Sear it in a hot pan with the vegetable oil until brown on all sides, remove from the pan and set aside.

Step 3

In the same skillet, add a bit more oil, saute the onions until golden brown, about 6 to 7 minutes.

Step 4

Place the onions, seared beef and remaining ingredients in your slow cooker and cook on low for about 6 to 8 hours or until super tender.

Step 5

Remove the beef from the broth, either shred or slice against the grain really thinly. Place it back into the hot juices to soak for a few minutes.

Step 6

Toast your rolls in a hot oven, nestle some of the beef and onions in the toasted rolls, top with cheese and pop them under the broiler to melt the cheese.

Step 7

When ready to serve, serve with the Au jus (the broth that the meat cooked in) and horseradish sauce on the side.