Preheat oven to 350°F

Use a hand mixer to beat together the butter (room temperature) with the sugars until creamy.

Add one egg and beat until well incorporated, then add the second egg along with the vanilla extract, beat until well combined.

On a separate bowl, combine the flour, baking soda, cocoa and salt

Slowly add the dry ingredients to the wet ingredients, mix together with a hand mixer until everything is well combined.

Add the chopped chocolate to the batter, and combine them with a spatula.

You can use a tablespoon or use your hands to form balls from the cookie dough and drop them on the baking sheet making sure to leave a space between each cookie.

Bake for around 10 minutes until the tops are dry.

Cut marshmallows in halves, place each on top of the cookies, and put them back in the oven for a couple of minutes, until the marshmallows melt. then remove them from the oven and add chocolate chunks on top of each cookie, put them back in the oven just so that the chocolate melts a bit.

Transfer to a cooling rack and cool completely.