INGREDIENTS
1
medium sized onion (diced)
2 cloves
garlic (minced)
1 tbsp
butter
2 lb
ground beef
1
large egg
1 cup
panko bread crumbs
1 cup
milk
1 tbsp
Worcestershire sauce
1 tsp
thyme
1 tsp
kosher salt
1/2 cup
ketchup
1 tbsp
brown sugar
1 tbsp
spicy brown mustard