INGREDIENTS
1 lb
lean ground beef
1/4 cup
panko bread crumbs
2 tbsp
tomato paste
1 tsp
worcestershire sauce
1 tsp
ground mustard
1/2 tsp
onion powder
1/2 tsp
ground pepper
1 pinch
salt
1 large
vidalia onion
4 oz
white mushrooms
1 tsp
fresh thyme leaves
1/2 tsp
garlic powder
2 1/2 tbsp
flour
3 cups
beef stock
1 tsp
worcestershire sauce
1 tbsp
butter
1 serving
kosher salt
1 serving
fresh parsley