[zabzonk]

Us UK people call peanut butter "peanut butter" - it's what's written on the jar.

[mrmincent]

Maybe it’s an old Australian thing then :)

[SturgeonsLaw]

Nope, it's peanut butter here in Aus too. Maybe it's your mum's thing :)

[batiudrami]

in WA it was called peanut paste back in the 90s and prior. Uncommon to hear it now though