Step 1

Prepare the burgers by adding all the seasoning spices to the ground beef: the salt, pepper, onion and garlic powders, rosemary and red pepper flakes (if using). And shape your patties to your desired thickness and size.

Step 2

Preheat a skillet ( or grill pan) over medium-high heat and add in the olive oil. Sauté the mushrooms with a pinch of salt for just a minute, then remove on to a plate and set aside.

Step 3

To that same skillet (or grill pan) add the burger patties ( no need to add an extra oil).

Step 4

Sear the burgers for about 5 minutes and flip them. Sear for an extra 5-7 minutes ( you might end up searing for 7 minutes per side if you prefer a thick burger) until the burgers are just cooked.

Step 5

Lower the heat to medium-low and divide the sautéed mushrooms on top of the burgers. Then place a slice ( or more) of swiss cheese over them.

Step 6

Cover the skillet with a lid or tent loosely with aluminum foil for just 30 seconds until the cheese melts. Turn off the heat.

Step 7

Slice the burger buns and slather them with your favorite condiments and pile on your favorite toppings.

Step 8

Then place the burger on top at the center of the bun.