Step 1

For the Sauce: Add all of the ingredients to a medium-size pot and cook over low heat stirring often until hot and thick. Keep warm.

Step 2

Add 1 ½ tablespoons of clarified butter to a large frying pan or flattop over medium-high heat and cook the onions until lightly browned and soft, about 10 minutes. Set to the side.

Step 3

Add the remaining 1 ½ tablespoons of clarified butter to the pan and add in the sliced steak.

Step 4

Cook for 2-4 minutes or until lightly browned and cooked throughout.

Step 5

Add ½ of the cooked onions to the top of the beef, season with salt and pepper and mix together until combined.

Step 6

To Serve: Add the sliced buns cut side down onto the other side of the pan or flat top to heat up and lightly toast.

Step 7

Evenly divide the sliced cooked steak between the lightly toasted buns and top off with the remaining caramelized onions and cheese sauce.

Step 8

Serve hot.