Salisbury Steak with Mushroom Gravy

I clipped this recipe from Cooking Light over a year ago and finally tried it the other night.  I'm so glad I did...it was amazing!!

Salisbury Steak with Mushroom Gravy

1/3 cup grated onion, divided

1/2 tsp salt

1/4 tsp black pepper

2 garlic cloves, minced

1 lb ground sirloin

1 tbsp butter

8 oz cremini mushrooms, sliced

1/3 cup dry red wine

1 1/4 cups beef broth

1 tbsp flour

1 tsp red wine vinegar

Combine 1/4 cup onion, salt, pepper, garlic, and beef.  Shape into 4 (1/2-inch thick) patties.  Heat a skillet over medium-high heat.  Coat with cooking spray.  Add patties; cook 3 minutes on each side or until browned.

Melt butter in pan.  Add mushrooms; saute 4 minutes.  Stir in wine and remaining onion; cook 2 minutes.  Combine broth and flour; add to pan, and bring to a boil.  Cook 5 minutes or until thick.  Add patties and vinegar to pan; cook 2 minutes.

I served this with mashed potatoes and green beans.