30 mins is more than sufficient to cover both the temples. They are literally next to each other.

all the eating places in Basavanagudi are awesome

1. YES, JAYANAGAR is a residential area with a commercial complex and lots of shops for clothing and jewellery, branded and unbranded, adjacent to basavanagudi 2. temples in basavanagudi to visit a) dodda ganesha and dodda basavanna b) ramakrihna ashrama c) Shringeri mutt 9 all within 1.5 km radius) 3. temples in jayanagar to visit a) raagi gudda anjaneya in jayanagar 9th block ( about 5 kms east of basavanagudi 4. restaurants in basavanagudi and jayanagar: Every street and every area has plenty of restaurants of all kinds. most of them are good But i would recommend you to try without missing the street food in V V puram between 6pm and 9pm on any day ( V V puram street food is in front of lalbagh in a circle called v v puram circle which also has subramanya, satyanarayana, venkataraman, vasavi temples around the circle and a good bakery called V B bakery where you have to try groung nut masala bun and badam burfi ). so njoy the food in street (all kinds of veg food and sweets to savour, which are prepared just in front of your eyes) visit the temple and spend the evening all the best for a nice visual treat evening Murthy

the only authentic south indian is - 'vidyarthi bhavan' but it has strict timing so check that and go. Other than this there are lot of restaurants few will serve you south indian also as they have mix menu like Shanti Sagar and A2B. Quite few are North Indian like Roti Ghar, Baisakhi, Hungrez etc.