In a pan add 1 tsp oil then roast coriander seed.
Add dry chilly and roast well.
Add fennel seed, cumin seed & fenugreek seed one by one.
Now add onion & tomato then saute well.
Turn off the flame add coconut & then allow to cool.
Now grind the above mixture smoothly.
In a pan, add oil, temper curry leaves,dry chilly,mustard
Add ginger garlic paste saute well till the raw smell goes.
Now add the grinded masala with little water bring to boil, then add salt.
Add panneer & cook for few min then turn off.
Now the Chettinad Panneer Masala ready to serve with chapathi or roti.