Costco Craze -- freezing bulk items.

I buy much of our food at Costco, and used to throw away a lot of it before we could use it up.  I've started prepping and freezing some bulk items {potatoes, onions, carrots, ground beef} to use in future recipes.  Now, we get the savings from buying in bulk, plus I already have a few prepared ingredients in the freezer to throw into soups, casseroles, nachos, spaghetti sauces, etc.  This morning, I chopped up the remaining onions and potatoes from the Crock-Pot Breakfast Casserole prep and separated them in sandwich bags for easy freezer storage.