In a large bowl whisk together the milk, eggs, brown sugar, almond extract, and cinnamon until well blended. Fold in the blueberries and bread pieces until well coated.
Spray the baking dish with cooking spray and pour the bread mixture into the dish.
Place the steam rack into the Instant Pot inner pot and add 3/4 cup water. Carefully lower the baking dish onto the steam rack.
Secure the lid, ensuring the valve is turned to the Sealing position.
Press the Pressure Cook button and set the time to 25 minutes.