Mix almond flour, a pinch of salt, one teaspoon of baking powder, 4 eggs, 10 drops of vanilla extract, 4 spoons of stevia, and blueberries. Bake in an air fryer at 170°C for 30 minutes.
Roughly chop the almonds.
Combine eggs and sugar in a bowl and mix well.
Add melted butter and milk, then mix until combined.
Sift in cake flour and baking powder, then fold gently.
Add the chopped almonds and blueberries, and mix lightly.
Pour the batter into a cake pan and smooth the surface.
Bake in a preheated oven at 180°C for 30-35 minutes.