Did you know you can freeze onions? Neither did I until recently! I usually buy my onions from Aldi where I can get three pound bags for $.99. A great buy! The only problem is that I usually don't use them up fast enough before they start to get soggy and soft.
I found my solution! Just chop the onions into small chunks (any size is fine), place in plastic freezer bags and stash in the freezer. My amount of grocery waste just decreased because of this simple kitchen tip!