Heat oven to 180 C and put baking sheet on a pan
Cut chocolate and put in a bowl. Add butter and melt together on microwave.
In mixer bowl put egg, sugar, brown sugar and salt. And whisk it on high speed for 5-6 minutes.
Slow mixer and add melted chocolate mix and mix it again on low speed
Add corn strach, cocoa powder and baking powder.
Put with ice cream tbsp on baking sheet with space between the cookies. Add salt to each ball
Bake it for 8-10 minutes