Instructions

  1. In a skillet cook the onions in butter and oil with sugar until soft and caramelized (about 10-15 minutes) season with salt and remove with a slotted spoon to a paper towel to drain the fat.
  2. Add in the mushrooms and fresh garlic to the skillet; cook over medium heat until mushrooms begin to just turn brown; transfer to a bowl.
  3. To the same skillet add in the beef broth to deglaze the pan; simmer for 5-6 minutes scraping down any browned bits.
  4. Add in whipping cream, ketchup, Worcestershire sauce and mustard, stir for 1-2 minutes over low heat with a wooden spoon.
  5. Then add in the cooked mushrooms and beef slices to the sauce in the skillet; stir to combine.
  6. Divide the steak/sauce mixture on the bread slices.
  7. Top with Swiss cheese, sprinkle with sauteed onions, then top with remaining bread slices.
  8. Delicious!