First clean and slice cut the potatoes (grill paneer or any vegetable of choice) to the desired shape that you want. Take two slices of bread, apply butter on one side of each bread. Now place the potatoes on one of the bread. If you are making a grill paneer sandwich, first roast some cubes of paneer (you can do that on the sandwich maker as well). You can even add slices of tomatoes over the potatoes. Place some lettuce/spinach on top of it. Sprinkle some salt, pepper and a pinch of chilli powder on top of the lettuce/spinach. Now close the bread with the other slice, cut it into triangular pieces and place them on the sandwich maker. Turn on the device and the device automatically turns off when the sandwiches are ready.