Every lodge and hotel has an attached restaurant and there are few independent eateries of any note.
There are simple roadside warungs though selling the regular basic Indonesian dishes and Rp 2,000 mugs of hot Javanese coffee kopi panas. There is no nightlife in the usual sense of the word but all restaurants are open at 03:00 3AM as that is when everybody wakes to see the sun rise.
Bromo Corner Cafe
in Cemoro Lawang right next to the park office
Decent cafe serving the usual Indonesian staples and excellent local coffee.
Waroeng Basuki
Nice eatery at Cemoro Lawang serving many traditional Indonesian dishes such as tahu tek tofu/beancurd, rujak cingur salad with a sweet and spicy sauce and garnished with ox-nose. Also serves Chinese food. Reasonably priced.