There are a large number of identikit buffet restaurants sited on the main road in Kintamani and Penelokan. These are aimed at tour buses. These restaurants offer fantastic views across the lake, and serve all-you-can-eat lunch buffets at acceptable prices. You could instead head for local food stands and other outlets close to Kintamani market and smaller restaurants in Penelokan.
In Toya Bungkah there are several small restaurants that specialise in locally caught fish from Lake Batur.