Start out by adding the mushrooms and onions to a large skillet, on medium to low heat. Toss in the butter, oil, and salt and pepper as indicated with the top ingredients. Cook these until they break down and caramelize, about 30-45 minutes.
Heat up the beef stock, reserving 1/3 cup. Bring that to a simmer. Take the reserved stock, and add in the cornstarch. Stir to dissolve the cornstarch, and set it aside.
To a large mixing bowl, add the ground beef, ground chuck, breadcrumbs, crack in the eggs, salt, pepper, garlic powder, and worchestershire sauce. Mix that extremely well with your hands, making sure to combine all of the ingredients.
Divide the mixture into six equal portions. Take each portion and shape into oblong logs, much like a football shape. Season the top of each one with a small pinch of salt.
Heat a large skillet on medium heat. Add in about one tablespoon of canola oil, and swirl that around. When the pan and oil are heated through, add in a few of the steaks, salt side down. Season again with a pinch of salt. Cook for about 5 minutes, being careful to not flip them or move them around. Your goal is to get a nice, even sear on the steaks. After 5 minutes, flip them over, cooking the steaks for about 10 minutes. After 10 minutes, set them into a casserole dish.
Repeat with the remaining three steaks.
Add the simmering beef stock into the mushroom and onion mixture. Raise the temperature to medium heat and continue to simmer. Stir the reserved beef stock and cornstarch mixture again, then pour that into the mushroom and onion mixture. It will quickly make a thick, delicious sauce.
When the steaks are all cooked, pour the mushroom and onion gravy over the top of the steaks. Serve with your favorite sides. My sides included awesome, homemade macaroni and cheese, along with French style green beans.
The salisbury steak has everything you would expect from a meatloaf, but when slathered with the mushroom and onion gravy, well, that just takes it to a whole other place. Tender, juicy, and loaded with flavor, this salisbury steak recipe was welcomed by all. When served with your favorite sides, this entire dish reminds of you of those TV dinner childhood memories, but actually better, because everyone was together around the dinner table. I hope you enjoy.