I can think of two, or at least, one dish and one snack:

dish: makke ki roti (roti made from corn flour) with sarson kaa saag (mustard greens, cooked). this is a very common, even iconic, Punjabi dish. I've only tried it once myself. didn't like the corn roti much. the mustard greens were fine.

snack: whole corn roasted on a fire, i.e. corn on the cob. bhutta in hindi. ubiquitous in india.

Yep bhutta is everywhere but I was referring to corn in dishes. I had no idea makke di roti was corn.