There is a vegetarian stall by the name Bishan Vegetarian stall which is just above the Bishan Bus Interchange.
The mini food court has been renovated and it looks more presentable.
I enjoyed a simple breakfast there. Ordered the Chee Cheong Fun @ S$1.6 and it tasted good. The fried bee hoon with a deep fried spring roll cost S$2. The fried bee hoon was a little lack of taste as I guess it meant to be pair with curry vegetable or gravy.
They do serve some dim sum and some other local vegetarian favourites.