In a large mixing bowl add cream cheese, sugar, and cocoa, beat and Mix the ingredients together until well combined.
Whip in sour cream, melted chocolate and vanilla until combined
Add eggs one at a time. Mix well.
Take out the crust from the freezer and pour the cheesecake mixture into the crust.
Cover the top of the cheesecake with foil
Add 1 cup of water into the instant pot
Place the cheesecake on the trivet and then to the pot
Close the lid and turn the sealing knob
Set the timer to 35 minutes and IP on high pressure
Once the timer goes off do the natural release
Remove the lid and take the cheesecake out of the pot
Place the cake on the wire rack and allow it to cook
Place it back into the fridge overnight