Ingredients
  • 3 tablespoons EVOO –
  • Extra Virgin Olive Oil, divided
  • 2 tablespoons butter
  • 1 pound cremini
  • mushrooms, chopped
  • Salt and pepper
  • 1 onion chopped
  • 2 cloves garlic,
  • grated
  • 12 slices Sargento
  • Baby Swiss Slices, divided
  • 1 1/2 pounds ground
  • sirloin
  • 2 tablespoons
  • Worcestershire sauce
  • 1 tomato, sliced
  • 1 head green leaf
  • lettuce
  • 1 red onion, sliced
  • 4 burger rolls
Preparation

Heat EVOO, 2 turns of the pan, over medium-high heat with butter. When butter is melted, add mushrooms and cook to deep brown, about 10-12 minutes. Add salt, pepper, onions and garlic, stir and let soften, about 3-4 minutes more. Take pan off the heat and pour mushroom mixture into a medium-sized bowl and let cool. Chop 8 slices of Swiss cheese and mix it with the cooled mushroom mixture. Set aside.

In a medium bowl, mix ground sirloin with Worcestershire sauce, salt and pepper. Score the meat into 8 sections then roll into 8 balls and form them into very thin patties. Lay 4 of the patties on your work surface, scoop 1/4 of the mushroom cheese mixture into the center of each patty, top with another patty and pinch the sides to seal the mixture inside.

Heat a cast-iron skillet over medium-high heat with one turn of the pan of EVOO. Cook burgers in the pan, about 3-4 minutes per side. Top each burger with a slice of Swiss cheese, cover the pan with a sheet of aluminum foil to help melt the cheese then place on a burger bun. Top with a slice of tomato, some lettuce and onion, and serve.