Heat a medium saute pan over medium heat. Add 2 tablespoons oil and 1 cup onion. Reduce heat to medium-low, and cook, stirring occasionally, until onions are golden brown and caramelized, about 35 minutes. Set aside.
Soak bread in milk, flipping once. Finely chop. In a large bowl, combine the remaining 1/3 cup onions, the sirloin, garlic cloves, bread, egg, parsley, 2 teaspoons Worcestershire sauce, 2 teaspoons salt, and 1/4 teaspoon pepper. Mix with your hands to combine. Divide meat mixture into 6 oblong patties (about 5 inches long and 3/4 inch thick). Dust with cornstarch.
Heat a large skillet over medium-high heat. Add remaining oil, and reduce heat to medium. Cook patties, 3 at a time, for 6 minutes, without moving them. Flip, and cook until cooked through, about 9 minutes. Set aside on a plate. Repeat with remaining patties.
Make the gravy: Add cooked onions and 1 teaspoon cornstarch to same skillet, and stir for 1 minute. Raise heat to medium-high. Pour in broth and a dash of Worcestershire sauce, and whisk until broth is clear and slightly thickened, about 3 minutes. Remove pan from heat, and return patties and juices to skillet, spooning sauce on top.
I found the methodology of this recipe odd...I processed the bread first into crumbs, and then soaked in the milk. I fried the patties, removed from pan, and then sauteed the onions, added mushrooms and garlic, and then the broth. I made a slurry with the cornstarch before adding it, and then returned the patties to simmer in the gravy for a while. I only shredded the onions for the beef mixture, but chopped the remaining onions for the gravy.
We enjoyed this but I think I will use less Worcestershire sauce next time I make this.
Tried this tonight. Very easy to make & great that it is made with readily available ingredients! I found the patties were cooked through with 6 mins on the first & only 6 mins on the second. Delicious! My picky husband & son both wanted seconds!
This was so wonderful. I made this for dinner and was surprisingly easy and VERY tasty!