I like their seasonal specials which keeps the interest alive and curious diners like me drawn back every now and then. Unless one likes your food perpetually cold, their hot dishes could be your only option.
Cafe Muji at Raffles City is a very pleasant space. You can linger there for a while. The food they offer is not bad but nothing to write home about.
Most diners I observed stuck to the tried-and-test MUJI Butter Chicken Curry ($14.90) or 4 Deli with Rice ($16.90).