INGREDIENTS
1 lb
ground beef
1 medium
onion
1/3 cup
panko breadcrumbs
1 large
egg
2 tsp
ketchup
1 tsp
dijon mustard
1 tsp
coarse kosher salt )
1 dash
worcestershire sauce
2 tbsp
olive oil
1 serving
remainder of onion from above
8 oz
mushrooms
1 tsp
garlic
2 tbsp
butter
2 tbsp
flour
2 cups
beef broth )
1 tbsp
ketchup
1 tsp
dijon mustard
1 tsp
worcestershire sauce