01 -
Put olive oil, onion, garlic, egg, milk, mustard, ketchup, Worcestershire sauce, oregano, salt, pepper, and breadcrumbs in a big bowl. Stir until it’s all mixed up.
02 -
Gently mix in the ground beef but don’t overwork it or it’ll get tough.
03 -
Split the mix into 4 parts and form oval patties about 2 cm thick each.
04 -
Heat a tablespoon of olive oil in a skillet over medium-high heat. Brown the patties on each side for 3 to 4 minutes until they’re done. Take them out and set aside.
05 -
Use the same skillet to cook diced onions with butter on medium heat, stirring until the onions turn soft and golden, around 5 minutes.
06 -
Toss in the mushrooms and cook for about 7 to 10 minutes until they soften and the liquid has mostly evaporated.
07 -
Pour in the beef broth, drop in the bouillon cube, sprinkle onion and garlic powder, and add Worcestershire sauce. Let it simmer and scrape the bits stuck to the pan for flavor.
08 -
Mix cold water with cornstarch until smooth. Stir this mix into the simmering sauce and cook for a minute or two till it thickens.
09 -
Put the browned patties back in the skillet, nestle them in the gravy, cover, and let them simmer on low heat for 10 to 15 minutes so the flavors blend.
10 -
Serve the patties warm with spoonfuls of mushroom sauce on top. They go great with mashed potatoes or rice.