I think that's what they are called. I bought some today from a fete (the one I had was gorgeous and so I bought a few more) and wonder what's the best way to keep them. I have about 7 and only I will eat them I think so can't decide whether to try freezing or just keep in an airtight container. Apparently they are just nuts, seeds, fruit etc. I don't think they have any flour in them but they definitely have some golden syrup or something similar! They are delicious!
Haven't made them but Nigella's musli/granola bars (seeds, nuts, raisin and fruit bits, condensed milk, sugar slowly baked) keep beautifully in a plastic container or even a plastic bag. Although I find I eat them very very quickly anyhow. I think freezing might ruin the texture.