Place 2 cups of water into your Instant Pot and place a trivet on top. Place the foil-covered pan on the trivet.
Set your Instant Pot on High pressure for 30 minutes, and when finished, allow it to release pressure naturally for 10 mins, and then release all remaining pressure.
Turn on your oven broiler.
Remove the foil from the pudding, sprinkle with ground cinnamon, and evenly spread the sugar on the pudding.
Broil on high for 5-8 minutes. Let it cool for about 20-30 minutes and then cut into slices to serve.