In a large mixing bowl, cream the softened butter and brown sugar together until smooth and fluffy. This should take about 2-3 minutes.

Add in the egg, molasses, apple cider vinegar, and vanilla extract. Mix until just combined.

In a separate bowl, whisk together the all-purpose flour, baking soda, salt, and the ground spices.

Gradually incorporate the dry ingredients into the wet mixture while mixing on low speed until a soft dough forms.

Cover the dough with plastic wrap and refrigerate for at least 3 hours or overnight.

Preheat your oven to 350°F (175°C). On a lightly floured surface, roll out the chilled dough to about ¼-inch thickness.

Transfer the cut-out cookies to parchment-lined baking sheets and bake for 8-10 minutes.

Allow the cookies to cool on the baking sheet for about 2 minutes before transferring them to a wire rack.