Last year we had food in the grounds of one of the temples during the Sunday night market. Does anyone know which one this would be?
No, Because many of the temple have food.
If you walk down the main market street from the Tha Phae Gate you will find a number of food areas off to the side of the market. Some are in spare space and others in the temple grounds. As John says, there are a number of temples with food stalls. Perhaps the largest is the one on your left not too far in. I think it is Wat Pan On - anyway, you won't miss it.
Enjoy your time in Chiang Mai.
Thank you I think it is Wat Pan On :)