how can I preserve what I bake?

[Houndlover]

Not sure if I have posted this in the right place so I do apologise if not.

I make my own biscuits as they are a whole lot nicer than any shop bought now what I really want to know is would there be anyway I could preserve them if I made a huge batch as it is a lot cheaper to bulk buy ingredients than do what I do now and buy as and when I need them any advice gratefully appreciated