Fist make the batter for the paneer. Put the flour and salt into a bowl and gradually stir in the measured water until you have a smooth batter.
Heat the 2 tbsps sunflower oil in a frying pan over a medium heat. Line a plate with some kitchen paper.
Dip the cheese pieces in the batter and transfer to the pan. Fry for about 1 minute on each side until golden brown. Remove from the pan with a slotted spoon and transfer to the plate to drain excess oil.
To make the sauce add the 1 tbsp oil to the same pan over a medium heat. Add the onion and green chillies and fry for about 5 minutes, stirring occasionally, until the onion is light golden.
Add the soy sauce, chilli sauce. ketchup , salt and pepper and mix well. Return the paneer to the pan and mix well into the sauce. Once the paneer is just heated through serve hot .