nice as pie

Related to nice as pie: sweet as pie

nice as pie

Surprisingly or unexpectedly pleasant. Mr. Stewart may seem crotchety, but actually he's as nice as pie—he's helped me carry my groceries home many times.
See also: nice, pie
Farlex Dictionary of Idioms.

nice as pie

INFORMAL
If you say that someone is as nice as pie, you mean that they are very friendly and pleasant, especially when this is not what you expect. I thought she'd be really scary but she was as nice as pie. Compare with sweet as pie.
See also: nice, pie
Collins COBUILD Idioms Dictionary, 3rd ed.

nice (or sweet) as pie

extremely nice or agreeable.
See also: nice, pie
Farlex Partner Idioms Dictionary

(as) ˌnice as ˈpie

(informal) very kind and friendly, especially when you are not expecting it: He’d been very nervous about meeting everyone, but they were all as nice as pie.
See also: nice, pie
Farlex Partner Idioms Dictionary
See also:
  • be as nice as pie
  • (as) gentle as a lamb
  • be as gentle as a lamb
  • gentle
  • gentle as a lamb
  • if (one) is a day
  • if he is a day
  • if he's, she's, etc. a day
  • be going great guns
  • French leave