Preheat oven to 425°F (220°C).Line a sheet pan with foil. Add carrots, and drizzle olive oil over. Sprinkle with cumin seeds, kosher salt, and thyme springs, and toss to combine.
Roast for 30-35 minutes, turning once, until caramelized and tender (they should still have a little bite to them).Set aside to cool.
For the yogurt and vinaigrette:
In a medium bowl, combine the ingredients for the yogurt base, and set aside.In a separate bowl, combine the lemon, pomegranate molasses or silan, salt, and sumac. Drizzle in the olive oil to emulsify, and set aside.
To serve:
Spread the yogurt over a medium platter (it should be spread thickly across the platter) and top with the carrots and thyme.
Drizzle the vinaigrette over the carrots, and garnish with pistachios, fresh herbs, Maldon salt, and a little more olive oil.