In a large mixing bowl, combine the grated onion, breadcrumbs, egg, salt, and pepper. Mix until well blended. Add the ground beef and gently mix until just combined. Shape into 6–8 oval patties, about 1 inch thick.
⅓ cup breadcrumbs, 1 large egg, ¾ cup yellow onion, Salt and black pepper, 1 pound lean ground beef
Heat a large skillet over high heat for about 2 minutes. Add the olive oil and swirl to coat. Cook the patties for 2 minutes per side, until nicely browned. Transfer to a plate and set aside.
1 tablespoon olive oil
Reduce the heat to medium and add butter to the same skillet. Once melted, stir in the mushrooms and cook for about 2 minutes, until golden.
2 tablespoons butter, 8 ounces fresh mushrooms
Sprinkle the flour over the mushrooms, stirring to coat. Cook for 1 minute to remove the raw flour taste. Slowly pour in the beef broth, stirring constantly until smooth. Bring to a gentle simmer. Season with salt and pepper.
2 tablespoons all-purpose flour, 2 cups beef broth, Kosher salt, Black pepper
Return the patties to the skillet and simmer 5–7 minutes, uncovered, until the beef is cooked through and the gravy thickens.
Garnish with fresh herbs and serve hot with mashed potatoes, rice, or buttered noodles.
Fresh herbs