Ascertain the ideal baking temperature by setting the oven to 350°F (175°C).
In a bowl, mix together flour, baking soda, cocoa powder, and salt.
Beat sugar and softened butter until the mixture is light and creamy.
For taste and consistency, add eggs and vanilla extract and stir.
Add the dry ingredients little by little until a thick dough is formed.
To give the dough texture and a nutty taste throughout, add chopped walnuts.
Place the dough on a baking sheet, bake it for ten to twelve minutes, and then let it cool fully.