In a large dish, combine yogurt, 3 tablespoons of canola oil, madras curry paste, lime juice and garlic. Add turkey and toss to coat, using your hands to get under the skin. Cover and refrigerate for at least 6 hours or overnight.

Preheat the oven to 425°F. Line a rimmed baking sheet with parchment paper. Add cauliflower and sweet potatoes to the baking sheet; drizzle with the remaining oil and sprinkle with salt. Toss to coat and spread into a single layer.

Remove turkey from marinade and discard extra marinade. Place turkey, skin side up, among the vegetables. Roast until the turkey is golden and cooked through and an instant-read meat thermometer inserted into the thickest part of the turkey registers 165°F, about 30 to 35 minutes, depending on the size of the thighs

Sprinkle with flat-leaf parsley (if using) and serve with your favourite mango chutney (optional).