Add 1 cup water in the inner pot and place trivet in the Instant Pot.
Meanwhile, take a large bowl and whisk together all the wet ingredients (mashed bananas, oil, brown sugar, milk/yogurt, vanilla extract, lemon juice, and vegan milk).
Sift all the dry ingredients (all-purpose flour, almond flour, cinnamon, baking powder, salt, and baking soda) in a bowl.
Add dry ingredients (in 3 parts) and whisk until the batter is smooth and free of any lumps.
Add walnuts & chocolate chip in the batter and stir until combined properly.
Add the batter in the bundt pan or mini loaf pans or springform pan, smooth the top, and if you want you can also sprinkle some walnuts & chocolate chips.
Lastly, wrap the springform pan with aluminum foil. And you can also create sling using aluminum foil for easy lifting.
Close lid and pressure cook for 50 minutes with the vent in the sealing position. When timer beeps, NPR (no pressure release) for 10 minutes and then Quick Release (meaning turn vent to the venting position).
(Note: If using Bundt Pan, then Pressure Cook for 50 minutes,
If using Springform Pan, then Pressure Cook for 60 minutes,
If using Mini Loaf Pans, then Pressure Cook for 45 minutes)
When pressure is released and the valve goes down then open the lid. Lift the pan out of the Instant Pot using the aluminum foil sling. Remove the aluminum cover and let it sit for 2-3 minutes.
Transfer the prepared Banana Bread on the wire rack and let it cool for 5- 10 minutes.
Slice it and enjoy the Banana Bread.