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Grilled Beef And Mushroom Burger

Grilled Beef And Mushroom Burger


  • 1 pound ground beef
  • a 1-ounce package of dried mushrooms (porcini, morels or other mushrooms)
  • 2 teaspoons worcestershire sauce
  • 1/2 teaspoon kosher salt (add more if you like burgers a little saltier)
  • 1/2 teaspoon freshly ground black pepper
  • 1/2 pound fresh shiitake mushrooms (can substitute button or cremini), sliced
  • 1 large onion, sliced thin (about 2 cups)
  • 2 tbsp olive oil
  • salt
  • 4-6 slices of swiss cheese
  • burger buns