Seems to me that excellent butter would be best all by itself on bread or noodles or vegetables. Using it in cooked items (e.g. cookies) or preparing a compound butter from it would seem to cover over the fine flavor rather than setting it off. I understand you have a lot, but the stuff keeps.
Sorry if I seem a party pooper here, but my tendency would be to use good stuff (whether butter or wine or anything else) with minimal "adulteration."
The Wife just brought home some very good Irish butter (perhaps the same stuff you got from Trader Joe's), and we just have it on toast and pancakes; for cooking, we just use decent, but not great, butter we get from a regular supermarket.
"Don't you ever underestimate the power of a female." Bootsy Collins