Blend the onion and garlic until smooth.
Squeeze out as much liquid as possible.
Mix with the beef and remaining ingredients, being careful not to overwork the meat.
Press onto sheet pans and score into portions.
Freeze completely, then separate and vacuum seal.
Bake from frozen at 375°F for 16–20 minutes, or until the center reaches 160°F.
Drain any liquid and broil for 4–5 minutes until the tops are golden.
