Homemade Salisbury Steak

In a large mixing bowl, combine ground beef, egg, mushroom soup mix, Worcestershire sauce, and Italian breadcrumbs. Mix until well combined.
Divide the mixture into equal portions and shape them into oval-shaped patties.
Heat 1 tablespoon of oil in a large skillet over medium-high heat. Add the patties and cook until browned on both sides, about 4-5 minutes per side. Remove the patties from the skillet and set aside.
In the same skillet, add 1 tablespoon of oil, add the sliced mushrooms. Cook until softened and lightly browned, about 5-7 minutes. Gradually pour in the mushroom gravy, stirring constantly to avoid lumps. Bring to a simmer and cook until the gravy thickens, about 3-5 minutes.
Return the cooked patties to the skillet, nestling them into the gravy. Simmer for another 5-10 minutes, until the patties are cooked through and the flavors have melded together.