Mix together all ingredients using a hand mixer, until the mixture is well-incorporated, and looks fluffy. This will keep the cake from being dense as almond flour cakes can sometimes be.
Pour into the greased pan and cover the pan with foil.
In the inner liner of your Instant Pot, place two cups of water, and a steamer rack. Place the foil-covered cake on the trivet.
Press the CAKE button and allow it to cook for 40 minutes. Allow the pressure to release naturally for 10 minutes. Release remaining pressure. If you don't have a cake button, just set your pressure cooker for 40 minutes at high pressure.
Let it cool before icing with a frosting of your choice or serve plain.
You can sub sweetener of choice for the Swerve.
If you use a silicone or glass pan, you will likely need tocook for longer. If at the end of cooking it still looks raw, cook for an additional 5 minutes.
You cannot sub coconut flour for the almond flour in this recipe.