Blanch the root vegetables in salted water for approx. 2 mins., drain. Add the squash, oil and salt to the root vegetables, mix well.
Place half of the hay in a large cooking pot, spread the vegetables on top, cover with the remaining hay.
Cover and bake for approx. 30 mins. in the centre of an oven preheated to 180°C.
Combine the miso paste, soy sauce, honey and water. Add the garlic and sesame seeds, season the sauce.
Finely chop the herbs, mix with the remaining ingredients, season the salsa.
Remove the baked vegetables from the hay, mix with the miso sauce, plate up. Serve with the salsa verde.