Step 1

Preheat the grill to high heat.

Step 2

In a large bowl, mash the bread and milk together with a fork until it forms a chunky paste. Add the salt, pepper, garlic, Worcestershire sauce and ketchup and mix well.

Step 3

Add the ground beef and scallions and break the meat up with your hands. Mix everything together until just combined. Divide the mixture into 8 equal portions and form balls. Flatten the balls into 3/4-inch patties about 4-1/2 inches across. Form a slight depression in the center of each patty to prevent the burgers from puffing up on the grill.

Step 4

Oil the grilling grates. Grill the burgers, covered, until nicely browned on the first side, 2 to 4 minutes. Flip burgers and continue cooking for a few minutes more until desired doneness is reached. Before serving, toast the buns on the cooler side of the grill if desired.

Step 5

Freezer-Friendly Instructions: The uncooked burgers can be frozen for up to three months. (Freeze the burgers on a baking sheet or plate so their shape sets, then transfer them to a sealable plastic bag for easy storage.) Defrost the burgers overnight in the refrigerator prior to serving and then cook as directed.