Place steaks in sauté pan over medium high heat and cook for 3-4 minutes. Flip over and reduce heat to medium low and cover until desire temperature is reached. Refer to chart at the bottom of the page for correct temperatures.
Remove steaks from pan and set aside. Add onions and thyme to the rendered fat from the burgers and bring temperature up to a medium high heat. Cook for 3-4 minutes, stirring occasionally. Add sliced mushrooms and garlic and continue cooking for another 2-3 minutes. Add salt to taste. Remove thyme sprig and cover the Salisbury steaks with your delicious onion and mushroom mixture. Enjoy!
TEMPERATURE GUIDELINES FOR BEEF STEAKS AND GROUND BEEF, BISON, AND LAMB: