Heat oil in large pot over medium; sauté onion 5 minutes until soft and translucent.
Cook garlic and ginger 1-2 minutes until fragrant, stirring frequently.
Add turmeric and cumin; stir to coat onion and toast 30 seconds.
Add carrots and sweet potato; stir and cook 2-3 minutes.
Add broth; boil, reduce to low, cover, and simmer 25 minutes until vegetables fork-tender.
Off heat, immersion-blend completely smooth or carefully transfer hot liquid to regular blender in batches.
Add coconut milk, lime juice, and honey.
Season with salt and pepper; thin with water or broth if needed.
Serve hot with cilantro, pumpkin seeds, and optional extra coconut milk swirl.