To not butter both sides of a sandwich?

[RoaryLion1]

Please help settle a (light-hearted) dispute between me and DH.

Buttering sandwiches for child’s birthday party (with spread, not actual butter, before anyone worries about kids arteries). I butter one slice of bread only and leave a little gap between buttered area and edge of slice, so spread doesn’t ooze out over the edge. DH butters both slices of bread AND spreads butter right to the edges of the slice. DH says my sandwiches are too dry, I say his are clarted in spread and too greasy.

Obviously how much butter you apply is down to personal preference - but DH maintains that I am in the minority and most people butter both slices and butter right to the edge.

YABU - DH is right, only buttering a single side of the sandwich is wrong
YANBU - one side of butter is sufficient

It is excellent that you follow the correct buttering protocol, but butter is not made from buttermilk and salt. It is made from cream and salt (if it is salted). The buttermilk is the liquid that is removed from the butter and used for summat else (like pancakes).
I cannot let this butter related inaccuracy go un-noted, sorry.

I’m Scottish and I’ve never heard of only buttering one slice. And real butter, right up to the edges.