In a large mixing bowl mix together hot chocolate mix, cocoa powder, salt, baking powder, and all purpose flour and set aside.

Mix the butter, sugar and brown sugar together with an electric hand mixer until a smooth creamy mixture remains Add the eggs in one at a time and mix between each egg. Mix in the vanilla.

Pour the dry ingredients into the mixing bowl and beat until a smooth batter remains. Stir in the chocolate chips.

Scoop cookies with a 1.5 tbsp cookie scoop, roll into balls with your hands, and place in the fridge for at least an hour. After chilling, place dough balls on a parchment lined baking sheet with space between each cookie.

Bake at 350 F for 10 minutes, remove the tray and quickly top each cookie with 3-4 mini marshmallows. Bake another 2 minutes. Remove and allow to cool.