Prepare the Wet Ingredients: In a large mixing bowl, cream together softened butter, granulated sugar, and brown sugar until light and fluffy. Add the eggs and vanilla extract, mixing until fully combined.
Combine Dry Ingredients: In a separate bowl, whisk together the flour, hot cocoa mix, salt, baking soda, and baking powder.
Mix the Dough: Gradually add the dry ingredients to the butter mixture, blending until fully combined. Stir in the chocolate chips and Mallow Bits until evenly distributed.
Chill the Dough: Cover the dough with plastic wrap and chill in the refrigerator for at least 30 minutes (up to 24 hours) to ensure a better texture and flavor.
Prepare for Baking: Preheat your oven to 350°F (175°C). Line baking sheets with silicone mats or parchment paper. Scoop 2-tablespoon portions of dough and place them on the baking sheets, spacing them about 2 inches apart.
Bake the Cookies: Bake for 9-11 minutes, or until the edges are lightly golden and the centers are just set. Remove the cookies from the oven and let them cool on the baking sheets for 5 minutes before transferring to wire racks to cool completely.