What's the most appropriate way to thaw hamburger meat?

I like to put the meat in a largish ziplock bag and flatten it out so it occupies the whole flat area of the bag but is only a couple of cm think. Then I press a chopstick into the meat lengthways both horizontally and vertically to create indents in the meat, as if I was making a naughts and crosses (tic-tac-toe) grid.

Then I freeze it lay flat in the freezer. Then when I want to use it I can 'snap' off squares of meat (along the indentation lines) to the amount that I need and I don't need to defrost the whole pack in a single go.

To defrost (I don't have a microwave) I leave the pieces on a metal tray for a little while, turning occasionally. This usually defrosts them in an hour or so, depending on how many there are

I freeze my hamburger meat in smaller pieces than that - squares a little smaller than the palm of my hand. I don't get worked up about them all being the same size either - I can grab two large ones or three smaller ones and come up with the amount of ground beef I want.

For spaghetti sauce, shepherd's (technically cottage) pie etc, I defrost the right number of squares in the microwave (on a plate or in a wide shallow bowl) then into the hot pan. Usually the centre is still frozen but it doesn't matter, it will defrost while the rest is browning. Sometimes a corner starts to cook but again this is not a big deal. For hamburger patties, I buy medium instead of lean or extra lean, and form them into patties before freezing. This means I know at a glance which is which in the freezer, and I don't have to worry about the meat partly cooking in the microwave before I form it into patties.

About the only meal this doesn't work for is meatloaf, which really needs ground beef that isn't a teeny bit cooked in one corner already and isn't still frozen in the middle either. I make that only with fresh ground beef which eliminates the problem.

If you have time, you can achieve a faster defrost if you have a surface that can absorb and distribute the cold. My preferred surface is metal storage container, or my pressure cooker. I place the meat that I want to defrost into the cooker (not on the heat of course) and leave it in a cool space in the kitchen. They are great at transferring heat from the stove to the contents, and also at transferring the cold from the inside to the outside.

Being airtight, this also eliminates the risks of flies and other "creatures" getting at the contents. As the item reaches room temperature, the process of "sucking" off the cold from the item slows.

Does your microwave have a defrost option?

I freeze ground beef in the tray it's bought in. To defrost I remove it from the packaging, put it on a microwave-safe plate and put it in on the "defrost" option for the appropriate weight.

When the microwave defrost cycle completes I then use a large sharp knife to chop the block into quarters, turn them so the corners of the quarters that were in the centre of the block are now on the outside edges of the plate, then put it through the defrost cycle again.