In a large bowl, whisk together the dry ingredients - all purpose flour, baking powder, baking soda, and kosher salt. 2 3/4 cups All Purpose Flour1 tsp Baking Powder1 tsp Baking Soda3/4 tsp Kosher Salt
Add room temperature butter, cocoa powder, espresso powder, brown sugar, and sugar together in the bowl of a stand mixer fitted with the paddle attachment for 3 minutes, until light and fluff. Scrape down the sides of the bowl, then add eggs, one at a time, ensuring each egg is fully incorporated prior to adding the next. 1 cup Salted Butter1/2 cup Dutch Cocoa Powder1 tsp Espresso Powder1 cup Brown Sugar1/2 cup Sugar2 large Eggs
Scrape down the sides of the bowl again and add the vanilla extract and heavy cream. Mix until combined, add flour mixture to the wet ingredients and mix until just combined, about 30 seconds. Use a rubber spatula to fold in the semi-sweet chocolate chips. 1 tbsp Vanilla Extract1 tbsp Heavy Cream1 1/2 cups Semi-Sweet Chocolate Chips
Use a large cookie scoop (3 tablespoon cookie scoop) to scoop out a cookie ball. Flatten into a disc, then add the marshmallow into the center. Wrap the dough around the marshmallow so that only the top of the marshmallow is peaking out on top. Place onto the prepared baking sheet. Pro tip (optional): Press chocolate chips into the top of the cookies for more chocolate action! Refrigerate for 1 hour, covered with plastic wrap. 16 Jumbo Marshmallows
Preheat oven to 375 degrees F.
Line a cookie sheet with parchment paper. Bake 6 cookies at a time, spacing about 3 inches apart, for 10-12 minutes, until edges of the cookies are set and the marshmallows are melty and golden brown on top.
Use the opening of a large cup to swivel around the cookie fresh out of the oven and allow the cookies to cool on the baking sheet for 10 minutes. Remove onto a wire rack to cool completely. Sprinkle with a little bit of flaky sea salt for garnish.
Notes
Use room-temperature butter. Cold butter won’t cream properly and melted butter ruins structure.
Don’t rush the creaming step! Three full minutes matters. You’re building air into the dough so your cookies bake soft instead of dense.
Weigh your flour with a kitchen scale! Too much flour = dry cookies. Lightly spooned and leveled is key.
Chill the dough fully. An hour minimum. This prevents the cookies from spreading into pools of melted chocolate. You can refrigerate them for up to 24 hours (this is the perfect cookie that you can make ahead when prepping for Christmas eve or holiday cookie exchanges).