Ingredients

  • 1/2 pounds Crimini Or White Mushrooms, Sliced
  • 6 Tablespoons Butter, Divided
  • 1 wheel Medium Sweet Onion, Sliced Into Half Moons
  • 1 Tablespoon Brown Sugar, Packed
  • 1/2 cups Dark Beer
  • 1 pound Hanging Tenderloin (aka Hanging Tender, Butchers Steak, Onglet, Butchers Tenderloin Or Hanger Steak)
  • 1 Tablespoon Cooking Oil
  • 1 clove Garlic, Minced Or Grated
  • 1 whole French Style Loaf (or Other Crusty Sandwich Loaf)
  • 3-58 ounces, weight Gruyere Cheese, Sliced Thin
  • Salt And Pepper, to taste

Method

  • 1.
  • In a small saute pan, saute mushrooms on medium high in 1 tablespoon of butter until cooked throughout and slightly golden.
  • 2.
  • Now to make caramelized onions: In separate saute pan, heat another 1 tablespoon of butter and add in sliced onions.
  • Saute on medium high until translucent and soft.
  • Add in brown sugar and allow to melt in.
  • Then pour in beer 1/4 cup at a time.
  • Allow beer to completely dissipate before adding more beer and then season with salt and pepper.
  • 3.
  • Season tenderloin with oil and salt and pepper and grill on a BBQ for 7-10 minutes, turning once or twice.
  • You want the meat to be just over rare when done.
  • 4.
  • When the meat is done, allow to rest for five minutes and then begin slicing into the thinnest slices possible.
  • Use a very sharp knife for this (DO NOT use a serrated blade).
  • 5.
  • In a small sauce pan melt the remaining 4 tablespoons (1/4 cup) of butter with the garlic and allow to cook for 5 minutes.
  • Brush this on the loaf (sliced in half and then horizontally to make a sandwich).
  • 6.
  • Heat broiler in oven to high, pile meat onto the buttered loaves, top with cheese and broil until golden and bubbly.
  • Done!