Ingredients:

• 8 oz. mushrooms, rinsed and sliced
• 1 onion, medium sliced thinly
• 2 cups beef stock
• 1 package brown gravy mix
• 2 tablespoons ketchup
• 1 teaspoon dijon mustard
• 2 lbs. ground beef
• 1 egg yolk
• 1/3 cup dried minced onion
• 1/2 cup Panko bread crumbs
• 1/4 cup milk
• 2 cloves garlic, finely minced
• salt and black pepper
• 2 tablespoons corn starch
• 1 tablespoon cold water

Directions:

1. Place mushrooms & onions in the bottom of your slow cooker.
2. Combine ground beef, egg yolk, minced onion, bread crumbs, and milk until well mixed. Form 8-10 patties. Brown patties over medium high heat (about 3 minutes per side), they do NOT need to be cooked all the way through.
3. Layer beef patties over mushrooms. Combine remaining ingredients except water and cornstarch. Pour over beef and cook on low 5-6 hours.
4. Once cooked, remove patties and set aside.
5. Turn slow cooker onto high. Combine cold water and cornstarch. Stir into the broth and let cook a few minutes until thickened. Add beef back into the sauce to coat.
6. Serve over mashed potatoes or noodles.