Step 1

In a medium bowl, sift flour, cocoa powder, baking soda, baking powder and salt. Set aside.

Step 2

In a large bowl, mix the melted butter (make sure the butter is melted and cooled to room temperature before using), brown sugar, sugar, vanilla, and eggs.

Step 3

Add the dry ingredients and mix using a rubber spatula. Add in the chocolate chips.

Step 4

Preheat oven to 350°F. Line 2 large cookie sheets with parchment paper. Place the cookie dough in the freezer for 15 minutes.

Step 5

Use a large cookie scoop to scoop the cookies. Press your thumb into the cookie dough and place a marshmallow in the hole. Press the dough around the marshmallow tightly but leaving a the top of the marshmallow uncovered. See pictures in the post.

Step 6

Place 6 cookie dough balls per cookie sheet. Bake for 13-15 minutes until the edges are set and the marshmallow is melty. Top with extra chocolate chips while warm.

Step 7

Transfer the cookies immediately to a cooling rack so the marshmallow doesn't melt.