Prepare all the ingredients.

Mix butter with sugar and salt until combined.

Add eggs to the mixture.

Mix until the eggs are well combined.

Sift almond flour, cake flour, cocoa powder, and baking powder into the mixture.

Fold the dry ingredients into the wet mixture using a spatula until no dry spots remain.

Add milk or water and mix well.

Mix in chocolate chips to taste.

Transfer the batter into a piping bag.

Pipe the batter into muffin tins.

Sprinkle additional chocolate chips on top for decoration.