Hot-and-Sour Curried Chickpeas

I used probably a little less than a red onion and a half (rather than 2) and used slightly less curry and Garam masala. I also did have some amchur I was able to use. It was really good and even better the next day and the day after that :) *if you wanted to make it vegan/WFPB you could just sub out the butter*