Bobbatlu is a famous Indian sweet made with Maida (all purpose flour) mixed with jaggery mashed chana dal. These have distinct names in distinct areas of India as it is known in Telugu speaking states. It is popularly known in Maharastra as Puran Poli, Karnataka Holige, and Tamil Nadu as Obattu. It's done at all significant festivals and at weddings etc. because of its taste so people crave for these specialities.
Stuffing from toor dal to chana dal to coconut can be anything.