I have been in Ho Chi Minh for a month now. Just near my place I stay is this small vegetarian restaurant. The place is clean and serve a basic but wonderful vegetarian lunch and noodle soup dishes at night. I have been here like numerous time when I want to have a healthy food. The lunch is a buffet style with numerous offering of about 15 dishes. You can pick or the lady will choose for you. Not much mock meat, but lots of vegetables, tofu and mushrooms. It comes with a bowl of soup for only 25,000d. At night they have numerous noodle dishes that can be order, portion is small but is fresh and tasty.
Pro: Clean, cheap, and taste healthy. Yes, they grill some of their vegatables so not oily.
Con : Place is small and no english menu