01 -
In a large bowl, beat softened butter with granulated sugar and brown sugar using an electric mixer on medium speed until light and fluffy, about 3 minutes.
02 -
Beat in eggs one at a time, ensuring each is fully incorporated before adding the next. Stir in vanilla extract.
03 -
In a separate bowl, whisk together all-purpose flour, cocoa powder, baking soda, and salt until evenly blended.
04 -
Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until just combined. Fold in semi-sweet chocolate chips gently.
05 -
Cover dough tightly and refrigerate for at least 30 minutes to firm up for easier handling.
06 -
Preheat oven to 350°F (175°C). Line two baking sheets with parchment paper for baking.
07 -
Scoop 2 tablespoons of chilled dough and flatten it in your hand. Add 1 teaspoon Nutella and 1 teaspoon marshmallow fluff in the center. Lightly press edges to partially seal, leaving a small opening. Flatten another tablespoon of dough into a disc and place on top. Seal edges to encase the filling.
08 -
Place assembled cookies on baking sheets spaced approximately 2 inches apart. Bake for 10 to 12 minutes until tops exhibit slight cracking.
09 -
Allow cookies to cool on baking sheets for 5 minutes before transferring to a wire rack to cool completely.