Wash, clean and chop the beans. Cook in boiling salted water for about 10 minutes. Wash, clean and halve the tomatoes. Peel and finely chop the onion. Wash thyme, dab dry and chop finely.
Mix salad dressing with onion and thyme. Drain the beans, rinse with cold water and drain. Mix with tomatoes and salad dressing. Season with pepper. Cut the tofu into slices. Cut each slice in half diagonally.
Heat the oil in a pan. Fry the tofu on each side until golden brown. Let it drip off on kitchen paper. Serve the tofu with the salad.