- Preheat the oven to 350°F and line two large baking sheets with parchment paper. 
- In a medium bowl, whisk together the flour, baking powder, ginger, cinnamon, cloves, and salt. Set aside. 
- In the bowl of a stand mixer with the paddle attachment, mix butter and brown sugar until light and fluffy.  
- Beat in the egg, followed by the molasses. 
- Gradually add the prepared dry ingredients into the molasses mixture. Mix until the ingredients are well combined and no lumps remain. 
- Using a 2-tablespoon cookie scoop, drop dough portions onto the lined baking sheets. Gently flatten each dough ball into a flat disk shape approximately 3 inches in diameter. 
- Using two spoons (this will keep your hands from getting sticky), add about 1 tablespoon of marshmallow fluff to the center of each disk of dough. Alternatively, you can pipe dollops of fluff using a piping bag. 
- Fold the dough up around the marshmallow fluff, ensuring the fluff is completely covered, and form a ball. Place each formed ball on the lined baking sheets. 
- Bake the cookies for 10-12 minutes, or until the edges are brown. Watch the cookies carefully so that the marshmallow does not burn. 
- Let the cookies rest for 10-15 minutes before serving.