I love Monty's! There's a branch in Temple Bar and another in Rathgar. The Rathgar branch is hosting cooking classes later this year and seems a bargain to me for an hour and a half masterclass with a 3 course meal and half a bottle of wine afterwards. Monty's have an extensive vegetarian menu with some vegan options. Their value menu (just under €20 for a three course meal) is amazingly good value too! If anyone is interested in the cooking classes, information is available here. I'm not sure how applicable it is to vegans, but I'm sure it would be an interesting insight into Nepalese cuisine all the same.