Turn Instant Pot to "Sauté" mode and heat butter and oil. Add onion, carrots, pumpkin, garlic, ginger and saute for a few minutes until garlic is fragrant and onion is partially softened.
Add broth, curry powder, nutmeg, cinnamon, paprika, red chili flakes, salt, pepper and mix until combined.
Put the lid on and turn the the valve to “Sealing.”
Select “Manual” mode and set the timer for 10 minutes.
When the cook time is over, allow pressure to release naturally for 10 minutes and theb, turn the valve to “Venting” and do a quick pressure release.
Remove lid and use a hand-held immersion blender to puree soup until smooth.
Continue cooking on the Saute mode to reduce the soup further (if necessary).
Mix in heavy cream.
Prior to serving, add toppings of your choice like swirls of heavy cream, pumpkin seeds, parsley, sprinkle of paprika. Enjoy!