Roast the groundnuts on a medium flame for about 6-7 minutes. Cool them and de-skin the roasted nuts.
Grind them in a mixer grinder in short pulses, and then add the Jaggery into it.
Grind it for few seconds more until the ground nuts release the oil. Pour this mixture into a bowl.
Make the LADDUS out of this mixture, the oil released from the nuts will help bind them. Serve and store.