"Au bonheur des tartes" is simply perfect in my opinion.
We did not manage to book a table the last time we visited Montpellier, so I'm not really up to date with prices and menus.
It is fa amily-run restaurant, and it's quite small, only a few table. It is highly recommended to book in advance, above all in weekends. Everytime I enter this restaurant I feel like being at home.
The restaurant is peculiar, the menu is mainly based on cakes, both sweet and salted. The idea is that you get 3 slices of salted cakes and 3 slices of sweet cakes so that you can taste different recipes. Of course, French recipes!