Bring to the boil a large pot, three-quarters full of water. Add 1/2 teaspoon of salt. Cook spaghetti following packet instructions until al dente.
Prepare the broccoli by cutting 1cm off the end of the stem. Then, chop the broccoli in half down the centre. Lay the flat sides down and thinly slice, including the stem. Finally, make two cuts crossways to make the slices smaller.
Trim the green beans in half at an angle.
Once the spaghetti has only two minutes left to cook, add the chopped broccoli and green beans to the boiling water and blanch them.
Drain the spaghetti and greens together and run them under cold water until cool, draining completely.
Prepare the tahini and tamari dressing (as per dressing instructions above) and roughly chop the curried cashews.
Finely slice spring onions using the white and half of the green parts. Finely chop coriander stalks like chives and roughly chop coriander leaves.
Toss together the cooked spaghetti, greens, and half of the tahini and tamari dressing in a large mixing bowl with tongs. Add half of the spring onions and coriander.
Transfer the salad to a wide, shallow bowl to serve. Scatter the remaining cashews, coriander, and spring onions on top.