When I make meatloaf, I make a lot of it. Some of it is made into the traditional meat loaf, some is made into what we call 'meat loaf burgers'. A meat loaf burger can be thawed in a few hours, and it is wonderful when cooked on a
George Foreman grill. so there is no need to pre-cook. But pre-cooked isn't bad, either. I love cold meat loaf sandwiches! Have also made small meat loafs and roasted them in muffin pans when the family is starved and can't wait for a big meatloaf to completely cook.