Place baking tray in oven and preheat to 350 F.
In small bowl, mix coriander, cumin, salt, and pepper. Peel carrots and parsnips, scrub beets, and chop all into bite-sized pieces. In large bowl, toss vegetables with olive oil and spice mix until well coated. Pour onto hot baking tray and return to oven to roast for 35 to 45 minutes, stirring twice during cooking time.
In food processor, pulse to chop pistachios into large bread crumb-size pieces.
Once vegetables have finished cooking, remove them to serving tray and toss with pomegranate molasses. Sprinkle with pistachios, pomegranate seeds, and cilantro, and serve.