- Place the ground beef in a medium mixing bowl. Add the egg, minced onion, worcestershire sauce, granulated garlic, salt, and pepper. 
- Mix with a wooden spoon or clean hands, until it’s one uniform mixture. 
- Make six steaks or patties from the meat mixture, about 4-inches long by 3-inches wide by 1/2-inch thick. 
- Heat a 12-inch cast iron pan over medium heat. 
- When the pan is hot, add the avocado oil. Place the steaks in the pan. 
- Cook the steaks until they are browned, 2-3 minutes. Flip them over and brown the other side for another 2 minutes. 
- While the steaks are browning, whisk the beef stock, Keto Chow, worcestershire sauce, and soy sauce together in a large mixing cup or bowl. 
- When the steaks are browned, transfer them to a plate. 
- Add 2 tablespoons butter to the same pan, then add the mushrooms and onions, stirring with a wooden spoon or spatula to scrape up any browned bits from the bottom of the pan. 
- Cook, stirring occasionally, until the mushrooms and onions are beginning to brown slightly and some of the liquid has evaporated from the mushrooms. 
- Transfer the onions and mushrooms to the same plate with the steaks. 
- Pour the prepared beef stock and Keto Chow into the pan and whisk out any lumps. 
- Simmer the sauce until it starts to look shiny and slightly thickened. 
- Return the steaks, onions and mushrooms to the pan. 
- Cook the steaks in the sauce for another 5 to 8 minutes, until the steaks register 165°F on an instant-read thermometer or the juices run clear when pierced with the tip of a knife. 
- Taste the sauce and adjust seasoning with more salt and pepper if desired.