Ingredients
For the Beef Patties:
- 2 pounds ground beef 85/15
 1 medium yellow onion grated
 2/3 cup panko breadcrumbs
 3 cloves garlic minced
 2 large eggs
 1 tablespoon Worcestershire sauce
 2 teaspoons Dijon mustard
 2 beef bouillon cubes crushed
 1 teaspoon black pepper
 1/2 teaspoon dried thyme
 2 tablespoons olive oil for cooking
For the Mushroom Gravy:
- 3 tablespoons butter
 1 medium onion finely diced
 16 ounces mushrooms sliced
 3 cloves garlic minced
 1/4 cup all-purpose flour
 3 cups beef broth
 1 tablespoon Worcestershire sauce
 1 teaspoon Dijon mustard
 Salt and pepper to taste
 Fresh parsley for garnish optional
Instructions
- Grate onion over breadcrumbs in a large bowl. Let sit 5 minutes to absorb moisture.
- Add remaining patty ingredients except olive oil to the bowl. Mix gently with your hands until just combined. Don’t overmix.
- Shape mixture into 6 oval patties, about 1-inch thick. Press a slight dimple in center of each.
- Heat olive oil in a large skillet over medium-high heat. Sear patties 3-4 minutes per side until nicely browned. Remove to a plate.
- In same skillet, melt butter. Add diced onion and cook until softened, about 3 minutes.
- Add mushrooms and garlic. Cook until mushrooms release their moisture and start to brown, 5-7 minutes.
- Sprinkle flour over vegetables, stir and cook 1 minute.
- Gradually whisk in beef broth, Worcestershire sauce, and Dijon. Bring to simmer.
- Return patties to skillet, including any juices from plate. Cover and cook 10-12 minutes until patties are cooked through and gravy thickens.
- Season gravy with salt and pepper to taste. Garnish with parsley if desired.
- Enjoy.
