Chop tofu into squares. Put some olive oil into a pan and fry the tofu lightly. When it is just crispy remove the tofu from the pan.
put your vegetables in the pan, starting with the ones that take longer to cook. Cook them until they are done, which is usually about 5-10 minutes. Whilst they are cooking make some rice or rice noodles.
add the tofu to the vegetables and pour on your sauce (careful not to use too much, but you can guess and taste to see how much you need)
serve on a plate with your rice or rice noodles and enjoy.