INGREDIENTS
1 1/2 lb
ground beef
1/2 cup
panko breadcrumbs
1
egg
3 tbsp
dijon mustard
3 tbsp
ketchup
1 tbsp
worcestershire sauce
1 large
onion
4 tbsp
butter
2 cloves
garlic
1/4 cup
all purpose flour
2 cups
beef stock
1 tbsp
worcestershire sauce
1/2 tsp
salt
1/2 tsp
pepper