Yes you can! First thing you need to place all ingredients in a large freezer bag and push out as much excess air as you can. Next place it on a flat surface in your freezer until it freezes completely. You can leave it like that or stack it upright once frozen. When you are ready to use is, let it thaw overnight in the refrigerator then, once fully thawed, add all ingredients in the slow cooker or Instant Pot as stated in the instructions.