Udipi is a great hidden gem off of 376 in Monroeville! I have been here a few times and love the traditional foods that they serve.
I've visited several different Indian restaurants and this is by far one of my favorites. While the restaurant my not look like much from the outside, the food they serve is delicious. The Malai Kofta is my absolute favorite. It's sweet yet savory and is served with a side of rice. The portions are very large and I always have leftovers to take home for the next day (or meal!) They also have AMAZING coffee!
The service can be hit or miss. While everyone there is very welcoming and friendly, they do not hover or check in frequently. I personally don't mind this as I enjoy only having someone come by every so often, but others find this to be off putting. Definitely recommend if you are looking to try a new Indian restaurant.