INGREDIENTS
1 lb
90% lean ground beef
1/2
onion
2
garlic cloves
1/3 cup
panko bread crumbs
1 large
egg
1 1/2 tsps
worcestershire sauce
2 tsps
mayonnaise
1 tsp
salt
1/2 tsp
pepper
1 1/2 tsps
italian seasoning
1 Tbsp
ketchup
1 1/2 tsps
whole milk
2 tsps
dijon mustard
1 Tbsp
oil
1/2 medium
yellow onion
1 Tbsp
unsalted butter
8 ozs
mushrooms
2 Tbsps
flour
1 1/2 cups
beef broth
1/2 cup
water
1/2 tsp
worcestershire sauce
1/2 tsp
dijon mustard
2 tsps
ketchup
1/4 tsp
salt
1/8 tsp
ground pepper