Add oats, almond milk, water, and cinnamon stick to the Instant Pot bowl and mix until combined.
Close the lid to the Instant Pot and ensure the spout is set to “Sealing” before turning on high pressure for 6 minutes, followed by 10 minutes of natural release. Once the 10 minutes of natural release are complete, quick release any remaining pressure.
Remove the cinnamon stick and discard. Stir applesauce, brown sugar, and blueberries into the oats until completely combined.
Serve with extra almond milk, brown sugar, fresh blueberries, banana slices, or any other desired toppings (not included in nutrition info).