For the cookies:
1 tablespoon cocoa powder
450 g flour
100 g sugar
1/2 teaspoon salt
3/4 teaspoon baking powder
pinch of baking soda
pinch of ground cinnamon
220 g butter
3 eggs

For the homemade marshmallows:
120 ml water
4 tablespoons light corn syrup
320 g sugar
2 tablespoon powdered gelatin
4 tablespoons cold water
4 egg whites
1/2 teaspoon pure vanilla extract

For the chocolate glaze:
300 g semisweet chocolate
9 tablespoons vegetable oil