In a medium bowl, whisk together all-purpose flour, ground ginger, ground cinnamon, cloves, allspice, baking soda, and kosher salt until evenly distributed. Set aside.

In a large mixing bowl (or stand mixer fitted with the paddle attachment), cream the softened butter and packed dark brown sugar on medium speed for 2 minutes until light and fluffy.

Beat in the dark molasses, room temperature egg, and vanilla extract until glossy and fully emulsified, scraping down the sides of the bowl as needed.

Gradually add the dry flour mixture on low speed, mixing just until a soft, fragrant spiced dough forms. Cover the bowl and chill in the refrigerator for 45 minutes so the dough is easy to handle.

Preheat your oven to 350°F (175°C) and line two large baking sheets with parchment paper. Place granulated sugar and powdered confectioners' sugar in two separate shallow bowls.

Scoop 1.5-tablespoon portions of chilled dough and roll into smooth balls. Roll each ball first in granulated sugar, then coat generously in powdered sugar until completely white. Place 2 inches apart on the baking sheets.

Bake for 9 to 11 minutes until the cookies have puffed, developed dramatic snowy fissures, and the edges are lightly set while the centers remain soft. Cool on the baking sheet for 5 minutes before transferring to a wire rack to firm up.