Mix together all the dry ingredients.Pour in wet ingredients one by one, mixing well with each addition.Pour into a 6-inch round cake pan and cover the pan with foil.Place 2 cups of water into your instant pot liner, and put in a steamer rack on top.Set your Instant Pot for 40 minutes at High Pressure, let it release pressure naturally for 10 minutes, and release remaining pressure.Carefully take out and pan and let it cool for 15-20 minutes.