There's something undeniably comforting about classic home-cooked meals, and hamburger steak with onion gravy is the epitome of comfort on a plate. This timeless dish combines seasoned ground beef patties with savory onion gravy, creating a heartwarming and satisfying meal that the whole family will adore.
Combine the ground beef, diced onions, egg, Worcestershire sauce, garlic powder, salt, and pepper in a mixing bowl. Mix gently until all the ingredients are well incorporated.
Divide the mixture into equal portions and shape them into oval-shaped patties. Press the center of each patty slightly to prevent it from puffing up during cooking.
Add a tablespoon of oil to a large skillet over medium-high heat. Once the skillet is hot, carefully place the hamburger patties in the skillet and cook for 4-5 minutes on each side until they are browned and cooked through. Remove the patties from the skillet and set them aside on a plate.
In the same skillet, add the butter, sliced mushrooms, and onions. Cook the onions over medium heat until they become soft and caramelized, stirring occasionally. This process may take around 10-15 minutes.
Slowly pour in the beef broth and Worcestershire sauce. Stir in sour cream. Allow the gravy to simmer until it thickens. Season the onion gravy with salt and pepper to taste.