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Export 11 ingredients for grocery delivery
Step 1
Place butter in a frying pan with onions. Cook over medium heat about 5 minutes ensuring onions don’t brown. Add mushrooms and cook until all liquid is absorbed.
Step 2
In a bowl combine beef, ¼ cup of the broth, egg, pepper and Panko bread crumbs. Mix well and form 6 patties.
Step 3
In another small bowl, combine remaining broth, flour, ketchup, Worcestershire sauce, mustard powder and water. Mix well.
Step 4
Remove mushrooms/onions from the pan. Place beef patties in the pan and brown on each side (about 2 minutes). Place onions/mushrooms on top of patties and pour broth mixture over top. Cover and let simmer 20 minutes or until done. Serve with mashed potatoes!