An internal review found the broadcaster should have more programmes about the Muslim, Hindu and Sikh religions.
Aaqil Ahmed, the BBC's head of religion and ethics, is the author of the report which has now been handed over to the Director General Lord Hall.
In a statement, he said: "We do look at the number of hours we produce, and measure that against the religious make-up of society.
"We also carry out checks to give us a better understanding of how we represent the different faiths across the various BBC channels and services.
"Christianity remains the cornerstone of our output and there are more hours dedicated to it than there are to other faiths.
"Our output in this area is not static, though. It has evolved over the years and we regularly assess it."
The BBC said: "Christianity remains the cornerstone of our output and the BBC is committed to delivering a range of content that both reflects, celebrates and challenges religion and ethics across BBC TV, radio and online."