Boil the linguine in plenty of salted water or vegetable stock.

Heat the olive oil in a deep frying pan and sauté the vegetables. Season them and when they are tender, add a cup of the water from the boiling pasta. 

Take 1 1/2 cup water from the pot where the pasta boils and place it in a bowl. Add the tahini and dissolve thoroughly.

Remove the linguine from the pot using tongs (without straining them) and place them in the frying pan with the vegetables.

Stir and add the watered down tahini. Shake the frying pan well so that the sauce covers the pasta.

Sprinkle with the roasted sesame seeds and serve.