Mushroom Onion Swiss Burgers
3
Burgers seasoned with salt & pepper then topped with mushrooms, caramelized onions, and melted Swiss cheese.
1. Heat the oil in a cast-iron skillet over medium-high heat until the oil begin to shimmer. Spread the onion slices out evenly over the bottom of the pan and Sprinkle a little salt on top. Cook the...
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