For the recipe you will need:
butter (softened) – 60g
dark chocolate – 180g
sugar – 120g
egg – 2 pcs.
flour – 1.5 cups
cocoa – 2 tbsp
baking powder – 1 tsp
vanilla extract – 1 tsp
salt – 1/4 tsp
powdered sugar (for sprinkling).
To make Chocolate Chip Cookies:

Mix sifted flour, cocoa, salt and baking powder. Dark chocolate, broken into pieces, melt in a water bath. Add butter to melted chocolate and mix thoroughly until smooth.

Beat eggs with sugar until white. Add chocolate buttercream, vanilla and mix well. Then add the flour mixture and knead a homogeneous dough. Wrap the dough in cling film and refrigerate for 1 hour.

Divide the dough into walnut-sized balls and roll them in powdered sugar. Place the cookies on a parchment-lined baking sheet, spaced apart. Send cookies to a preheated oven and bake until browned for about 10 minutes at 170C.