dollars to doughnuts

used to show one's utmost certainty about something

The idiom "dollars to doughnuts" originates from the early 20th century, where dollars were considered a valuable bet against something of lesser value, like doughnuts. It is used to convey a high level of confidence or certainty regarding a particular outcome or prediction.

I'd bet dollars to doughnuts that the experienced team will win the tournament.
Dollars to donuts, he forgot about the meeting again
Given the state of the housing market, I'd bet dollars to doughnuts that property prices will continue to rise.
He was so sure of his guess that he'd bet dollars to doughnuts that the next song on the radio would be his favorite.
After examining the evidence, the detective would bet dollars to doughnuts that the suspect was at the scene of the crime.