Making this recipe for the third time tonight—can’t get enough of that amazing sauce! (Page 3 ) | November 4, 2025

In a large bowl, combine ground beef, egg, minced onion, breadcrumbs, crushed garlic, salt, pepper, thyme, and rosemary. Mix until well combined.
Shape the mixture into 4 patties.
Heat olive oil in a skillet over medium heat. Brown the patties on both sides, about 3-4 minutes per side.
Place sliced onions and mushrooms in the bottom of the slow cooker to create a bed.
Arrange the browned patties on top of the onions and mushrooms.
In a separate bowl, whisk together beef broth, brown gravy mix, ketchup, Dijon mustard, and Worcestershire sauce.
Pour the gravy mixture over the patties and vegetables in the slow cooker.
Cover and cook on low for 5-6 hours, or until the patties are cooked through and tender.
Remove the patties from the slow cooker and set aside.