These delicious Mushroom Swiss Burgers are packed full of umami flavor thanks to the juicy beef, Dijon mustard, fresh thyme, caramelized onions, meaty cremini mushrooms, and nutty, melted Swiss and Gruyere cheeses. I hope you’ll enjoy these burgers and let me know what you think of this recipe, and video. I’m happy to hear constructive comments.
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INGREDIENTS:
FOR THE MUSHROOM AND CARAMELIZED ONION TOPPING:
2 pints cremini mushrooms cleaned and cut into slices
2 large sweet onions sliced
1 tablespoon olive oil
1 tablespoon mushroom base
1 teaspoon kosher salt use ½ teaspoon if using iodized salt
¼ teaspoon black pepper
4 fresh thyme sprigs tied together with cooking twine
2 tablespoons heavy cream
1 teaspoon apple cider vinegar
FOR THE BEEF BURGERS:
2 pounds ground beef
1 tablespoon Dijon mustard
1 tablespoon mushroom base
1 teaspoon kosher salt use ½ teaspoon if using iodized salt
½ teaspoon black pepper
6 slices Swiss cheese
6 brioche hamburger buns or your favorite variety
4 ounces shredded gruyere cheese