Yōshūji serves superb shōjin-ryōri in a delightful old Japanese farmhouse with an irori (open hearth). The house special, a sumptuous selection of vegetarian dishes served in red lacquered bowls, is called kurama-yama shōjin zen (¥2700). Or if you just feel like a quick bite, try the uzu-soba (soba topped with mountain vegetables; ¥1080).
You'll find it halfway up the steps leading to the main gate of Kurama-dera; look for the orange lanterns out the front.