1 1/2cups9 oz. semi-sweet chocolate chunks, divided
2cups106 grams mini marshmallow bits, divided
Preheat oven 350°F. Line two or more baking sheets with parchment; set aside.
Whisk together flour, cocoa powder, salt, baking soda and baking powder in a medium bowl and set aside.
In the bowl of a stand mixer using a paddle attachment, cream butter until light and fluffy, then add sugars and mix until well combined on low speed. Add eggs and vanilla extract, mixing until just combined. Slowly add flour mixture, and stir until blended, stopping to scrape down the sides and bottom of the bowl to make sure all the ingredients are well-incorporated. The finished dough will be very thick. Fold in 1 cup of the chocolate chunks and 1 cup of the mini marshmallow bits.
Scoop dough with a tablespoon and roll into walnut sized balls, or scoop out with a small cookie scoop, and place on prepared baking sheets 2 inches apart. Bake for 5 minutes, then remove from oven and lightly mash down the top of each cookie with a teaspoon. Sprinkle about a teaspoon of mini marshmallows onto each cookie, and add one or two chocolate chunks to the tops of the cookies. Return to the oven and bake 5-6 more minutes. Remove from oven and let cool on baking sheet at least 10 minutes, then place on wire racks to cool completely.
Keyword Christmas cookies, hot cocoa, mini marshmallows