sure as God made little green apples

(as) sure as God made little green apples

Certainly or without a doubt; assumed as true based on previous experience or evidence. It had to have been Mike who leaked our plans to the press, sure as God made little green apples! Come into a great fortune and, as sure as God made little green apples, the number of those who would be your friend increases tenfold.
See also: apple, god, green, little, made, sure
Farlex Dictionary of Idioms.

*sure as God made little green apples

 and *sure as eggs is eggs; *sure as fate; *sure as I'm stand-ing here; *sure as you live
Rur. absolutely certain. (*Also: as ~.) I'm as sure as God made little green apples that he's the one. I'm right, as sure as you live!
See also: apple, god, green, little, made, sure
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • (as) sure as fate
  • (as) sure as God made little green apples
  • fate
  • (as) sure as you're standing there
  • (as) sure as I'm standing here
  • (as) sure as you live
  • sure as the wind blows
  • sure as shooting
  • Sure as shooting!
  • (as) sure as shooting
References in periodicals archive
As sure as God made little green apples, you will not be able to justify to a racegoer on a day out that hitting a horse is for its own good.
Time for racing to get real; LETTERS
Likewise Derosier is so tired of being stereotyped that he rarely wears his Roman collar in public because "as sure as God made little green apples," he says, "someone's going to come up and start telling me his life story."
How priests want to be treated by laypeople
Sure as God made little green apples, this will lead to serious altercations, never mind the disturbance and annoyance it will cause to pub users who have not the slightest interest in racing and betting.
Letter: Unpalatable