Heat oil in a large pot over medium heat. Cook diced onion for 3–4 minutes until softened.
Add minced garlic, ginger, salt, and pepper; cook for 1–2 minutes until fragrant.
Stir in diced beets, parsnips, and vegetable broth. Bring to a boil, then reduce heat and simmer for 15–20 minutes until vegetables are tender.
Using an immersion blender or regular blender, blend soup until completely smooth.
Serve hot with a swirl of coconut cream or yogurt, fresh parsley, and black sesame seeds.