Mix all ingredients together and pour into a greased springform pan. Cover the top with foil.
Pour 2 cups of water in to your Instant Pot, and place a trivet on top.
Cook at High Pressure for 25 minutes, and allow it to release steam naturally.
Let the pudding come to room temperature, and then run a knife along the edges to separate the pudding from the sides of the pan. Carefully unclasp the sides of the pan and serve.