There are many benefits to homemade hamburgers. You don't have to leave your house, you can make enough for leftovers
But the downside to homemade burgers is the mess, since mixing and molding the burger patties is a job
All you'll need is a large sealable plastic bag and something long and thin, like a ruler. Scoop the hamburger meat into the bag.
With the bag still open, carefully begin to roll and press the meat down that so it expands to fill the entire bag in an even layer.
Squeeze all the air out before sealing it in, then use your dividing tool to make grid-style indentations in the burger meat
Make sure the bag is laying flat in the freezer, and when it comes time for your next barbecue
There are different variations on this frozen burger patty trick. One from YouTube account crazyhacker can save you freezer space
Continue on to remove all the air, seal the bag, and create your grid marks with the ruler as before.