The striker moved to Ibrox from Leicester City this summer.
The striker is one of a number of new faces at Ibrox this season as Warburton has added extensively to his squad.
He was expecting to play second fiddle to striker Martyn Waghorn, who is very much the first choice centre forward at Ibrox.
However, an injury to Waghorn in the opening game of the season against Hamilton Academical has threatened to rule him out for an extended period.
That saw Dodoo handed a start against Peterhead on Tuesday and he impressed, bagging his side’s fifth goal in the 5-0 win.
The display will have delighted Warburton, and he says they never doubted the youngster’s ability.
“We never had any doubts about his quality,” he told the Daily Mail. “We knew what Joe can do, there’s a lot of development from him still ahead, but we were never going to bring anyone to the club just to make up the numbers.”
It now remains to be seen whether Dodoo can fill the void should Waghorn be injured for an extended period of time.
The striker will not have been expecting to be in the first-team so soon following his move this summer, but he now has a chance to impress.
Rangers will certainly be hoping he can do that with Waghorn’s injury threatening to derail their title challenge before it has started.