A comforting and flavorful dish featuring tender beef patties smothered in a rich mushroom gravy, perfect for a hearty meal.
Combine the ground beef, finely chopped onion, egg, Worcestershire sauce, breadcrumbs, salt, and pepper in a mixing bowl.
Mix gently to avoid overworking the meat, which can make the patties tough.
Shape the mixture into evenly sized patties, about 3/4 inch thick.
Use damp hands to prevent the mixture from sticking.
Heat a skillet over medium heat and melt 1 tablespoon of butter. Cook the patties until browned on both sides, then remove and set aside.
Cook in batches if necessary to avoid overcrowding the skillet.
In the same skillet, add the remaining butter and sauté the sliced onion until caramelized.
Stir frequently to prevent the onions from burning.
Add the mushrooms to the skillet and cook until softened.
Use fresh mushrooms for the best flavor and texture.
Prepare the gravy by mixing the brown gravy mix with cold water, then pour it into the skillet.
Stir constantly to prevent lumps from forming.
Return the patties to the skillet, cover, and simmer on low heat for 20 minutes, turning occasionally.
Ensure the patties are fully cooked by checking their internal temperature.
Serve the patties topped with the caramelized onions and mushroom gravy.
Pair with mashed potatoes or egg noodles for a complete meal.