Press sauté on the Instant Pot, and add the olive oil.
When hot, add the onions and sauté them
When they are soft, push them to one side and cover the rest of the bottom with a layer of squash.
Let them brown for about 5 minutes, stirring a couple of times.
Spread a layer of the remaining squash, then a layer of the carrots and apple, the nutmeg, the ginger root, and finally, the remaining squash and the stock.
Close and lock the lid of the Instant Pot. Press manual and use the + or - to choose 11 minutes pressure cooking time.
When time is up, use the Quick Release feature.
When Quick Release is complete, open the Instant Pot
Remove the pot from the Instant Pot.
Fish out the ginger root and discard. Let soup cool a bit.
Using an immersion blender, puree the contents of the pot.
Add the coconut milk.
When serving, top with pumpkin seeds