Salisbury Steak - cooking recipe

Ingredients

extra virgin olive oil, couple turns of the pan
1 lb lean ground sirloin or 1 lb lean ground beef
1/4 cup finely chopped onion (about half a small onion)
1 egg, beaten
1 1/2 teaspoons McCormick grill seasoning (eyeball it) or 1 1/2 teaspoons salt & pepper (eyeball it)
1 1/2 teaspoons Worcestershire sauce (4 or 5 splashes)
1/3 cup dry breadcrumbs (eyeball it)
1/2 large onion, halved and sliced thin
8 ounces sliced fresh white button mushrooms
1/3 cup dry red wine
1 (14 1/2 ounce) can beef broth
3 tablespoons cold water
2 tablespoons cornstarch (water & cornstarch should be mixed by shaking in a jar with lid tightly closed)

Preparation

Preheat oven to 250 degrees.
Heat EVOO in a skillet.
Combine beef, chopped onion, beaten egg, seasonings, Worcestershire sauce and bread crumbs in a bowl with hands.
Shape into 4 oval patties, about 3/4\" thick.
Brown patties in skillet for 5 minutes per side, then remove patties to an oven-safe dish and keep warm in oven.
Add a bit more EVOO to the pan, if necessary.
Add sliced onion and mushrooms to skillet and saute until mushrooms are golden brown, about 5 minutes, then add salt & pepper.
Add red wine to deglaze skillet and cook out alcohol, about 5 minutes.
Add beef broth and heat to boiling, then reduce heat to low, cover, and simmer for 10 minutes.
Bring onion mixture to boil again and add water/cornstarch mixture. Stir constantly, for 1 minute, and add salt & pepper.
Pour gravy over patties, and serve.