mix butter, sugar and eggs until combined

pour in flour, cocoa powder, vanilla essence, nutella, salt and baking soda into first mixture and mix well

lastly, throw in nuts and mix evenly

bake in 180 celcius until brown

for the drizzle, I melted the chocolate, milk and cocoa powder using the water bath method

once the cookies cooled down, I drizzled over the chocolate with a spoon.