The process is simple: peel and slice your apples, freeze them on a cookie sheet, and then put them in a plastic freezer bag. That is the basic process, but we provide more detail here on what to do and how to use your frozen apple slices.
Peel and slice your apples.
Spread your apple slices in a single layer on a cookie sheet. ...
Place the cookie sheet into the freezer.
When the slices are stiff and frozen, remove the tray from the freezer.
Working quickly, pop the apple slices loose on place into a freezer bag.
For best results, place two cups of apples in each bag so that you can easily find a recipe-ready quantity.
Squeeze as much air out of the bag as you can and seal.
Flatten the bag onto another cookie sheet and return the frozen apple slices to the freezer.