Preheat the oven to Gas Mark 6, 200°C, fan 180°C. Toss the squash and the onion with 1 tablespoon of the oil and dried thyme. Season and roast for 40-45 minutes.
Cook the bulgar wheat following pack instructions. Blanch the broccoli for 4-5 minutes. Add to bulgar wheat.
For the dressing, combine the chilli, remaining oil, vinegar, lemon juice and ginger. When the squash is cooked, add the bulgar wheat and broccoli and dressing. Season and crumble over the ricotta cheese.