There are four restaurants in the village, but for something special you need to venture a short drive away to visit our two favourites.
The first is La Bastide de Marie which is on the road to Lacoste, about 5 minutes drive from Menerbes. This is a hotel which gives priority to its own guests, but if you can get a table the food and the ambience are well worth it. They grow their own wine which is in the price.
The second is the Mas de Tourteron, which we go to every time we stay. The garden is fantastic, and if it's warm enough to sit outside then the setting is idyllic.
Of all the restaurants in the village, the one that gets the best reviews in the guest book is La Rabasse. The others are La Clementine which has good views over the valley, Le Galoubet and the pizza place, all of which are good for the price.
A good resource for local restaurants can be found at http://theluberon.com/restaurants.htm