Using a stand mixer or a large mixing bowl with a handheld electric mixer, cream the softened butter and brown sugar together until light and fluffy.
¾ cup unsalted butter, ¾ cup brown sugar
Add molasses, vanilla extract, and egg. Mix until well incorporated.
½ cup unsulphured molasses, 1 ½ tsp. vanilla extract, 1 egg
In a medium-sized bowl, whisk flour, ginger, cinnamon, nutmeg, baking soda and salt together.
3 cups all purpose flour, 2 tsp. ground ginger, 1 tsp. cinnamon, ½ tsp. nutmeg, 1 tsp. baking soda, ½ tsp. salt
Slowly add the dry ingredients to the wet ingredients, mixing on low speed and making sure each addition is mostly incorporated before adding more.
Once the gingerbread dough is mixed, generously flour a clean counter or a large piece of parchment paper and place your dough on the floured surface.
Use floured hands or a piece of parchment paper to fold the dough together, then wrap it in parchment or plastic wrap and place in a resealable plastic bag. Let the dough chill in the refrigerator for at least 6 hours (or for best results, overnight).
Once the dough has chilled, line a baking sheet with parchment paper and set it aside. Preheat your oven to 350 degrees.
Generously flour your work surface, your hands, and a rolling pin. Roll out your gingerbread dough until ¼ inch thick.
Use a gingerbread man cookie cutter to cut ginger men about ¼ inch thick. Avoid any thin or cracked edges, as the excess dough will be rerolled.
Place your cookies on the prepared baking sheet. Gather the leftover dough and reroll to make more ginger men, until all the dough is used up.
Move the cookies to the preheated oven and bake for 10-12 minutes, or just the edges are starting to crisp. Be careful not to overbake. Cool the cookies to room temperature on a wire rack.
Once the cookies have cooled, turn the gingerbread men upside down and use melted chocolate to attach the candy eyes and a red M&M nose to each one.
½ cup chocolate chips, 48 candy eyeballs, 24 red M&M's
Using a piping bag and more melted chocolate, pipe reindeer antlers on the top part of the cookie. You could also use a squeeze bottle for this step.