Step 1

In a large bowl, combine the ground beef, egg, onion-mushroom soup mix, Worcestershire sauce, and breadcrumbs until the mixture reaches a firm consistency and holds together.

Step 2

Shape the ground meat mixture into round or oval patties, ensuring they are the same size for consistent cooking.

Step 3

Heat 2 tablespoons of olive oil in a large skillet over medium-high heat. Sear the patties for approximately 4-5 minutes on each side until they develop a golden brown crust. Set the patties aside.

Step 4

In the same skillet over medium heat, add a tablespoon of oil as well as the sliced mushrooms. Cook them for about 8 minutes or until they soften.

Step 5

Add the mushroom gravy, adjusting the water quantity for your preferred gravy consistency.

Step 6

Season the gravy with salt and pepper and then return the browned patties to the skillet, ensuring they are in a single layer and well-coated with the rich gravy.

Step 7

Reduce the heat to low, cover the skillet, and let it simmer for about 15-20 minutes. This allows the flavors to meld, and the ground beef patties absorb the rich, thickened mushroom gravy.

Step 8

Ensure the salisbury steaks are thoroughly cooked by cutting them into one to confirm there is no pink in the center. The internal temperature should be at least 160°F (71°C).

Step 9

Carefully transfer the salisbury steaks onto a serving platter.