01 - Whisk together all-purpose flour, baking soda, baking powder, ground ginger, ground cinnamon, ground cloves, ground nutmeg, and salt in a medium bowl. Set aside.
02 - Beat the unsalted butter and dark brown sugar in a large bowl until light and fluffy using an electric mixer.
03 - Incorporate the egg, molasses, and vanilla extract into the creamed mixture, mixing until fully combined.
04 - Gradually add dry ingredients to the wet ingredients, mixing on low speed until a consistent soft dough forms.
05 - Divide dough in half, shape into discs, wrap each with plastic wrap, and refrigerate for at least 1 hour.
06 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
07 - On a lightly floured surface, roll one disc of dough to 1/4 inch thickness.
08 - Use a gingerbread man cookie cutter to cut shapes and place them 1 inch apart on prepared baking sheets.
09 - Bake cookies for 8 to 10 minutes until edges are just set; for softer cookies, remove at 8 minutes. Let cool on baking sheet for 5 minutes before transferring to a wire rack to cool completely.
10 - Once cooled, decorate cookies with royal icing, sprinkles, mini chocolate chips, or candies as desired.