Chocolate cut into cubes, nuts, chop, but quite well.
Mix the butter with the sugar, add the egg and mix. Add the flour, baking soda, salt, and mix thoroughly (you can mix).
To mass add nuts and chocolate (you can share and some do with nuts and chocolate).
Oven heat up to temp. 200 degrees.
Bake 10-15 minutes.
You can add also poppy, raisins or other goods grocery, or oil to the cake on what who wants.