Tear the slice of bread into small chunks and soak it in the milk for 5 minutes, then mash it with a fork until it is a loose paste.
Mix the ground beef, bread and milk mixture, onion powder, garlic powder, Dijon mustard, eggs, and Worcestershire sauce in a large bowl until well combined.
Form the mixture into oval patties, about 1/2 inch thick.
Brown the patties in a skillet over medium heat on both sides. Transfer the patties to a dish to keep warm. You'll finish cooking them soon. Leave any fat remaining in the pan.
Add the sliced mushrooms to the skillet and saute until they’re soft, about 6 minutes.
Deglaze the skillet with beef broth, adding Maggi sauce, thyme, and tomato paste to the mix.
Return the patties to the skillet and simmer over medium heat for 8-10 minutes, flipping the patties half way, or until they’re cooked in the middle. They should reach an internal temperature of 165-F.
Scoot the patties to the side, then mix the cornstarch and 2 tablespoons of water in a small bowl. Drizzle the cornstarch slurry into the sauce in the skillet, and bring back to a simmer to thicken. Simmer for 1-2 minutes.
Season the sauce with salt and pepper to taste then serve!
Notes
Chef Jenn's Tips
Don’t overmix the meat; only mix it until it’s just combined.
Maggi sauce adds so much umami and flavor, but you can skip it if you can’t find it.
Don't rush the browning of the patties; this step adds a deep flavor to the overall dish.
Finishing the patties in the cooking sauce helps keep them moist and adds tons of flavor to the gravy.
Nutritional information for this recipe is provided as a courtesy and is calculated based on available online ingredient information. It is only an approximate value. The accuracy of the nutritional information for any recipe on this site cannot be guaranteed.