In a large mixing bowl using an electric mixer on medium speed cream together butter, brown sugar, and molasses until fluffy, about 2 minutes. Add the egg and vanilla extract beating until fully combined. Add orange zest, mixing until evenly distributed.
In a medium bowl use a whisk to sift together flour, ginger, cinnamon, baking soda, clove, salt and nutmeg. With mixer on low speed, gradually add the flour mixture to wet ingredients beating just until the dough comes together. (Don't overmix.)
Divide dough in half. Scoop the dough onto two separate sheets of plastic wrap. Create two flattened discs. Wrap securely with the plastic wrap and chill in the fridge until firm, at least 2 hours preferably 4 hours or overnight.
Preheat oven to 350° and line two large baking sheets with parchment paper. Place one disc of dough on a lightly floured surface and use a rolling pin to roll dough to around until 1/4-1/3" thick rectangle.
Cut into 3-inch wide cookies using a gingerbread cookie cutter, Christmas trees, stars, bells, candy canes. or any of your favorite shapes Transfer to the prepared pans. Keep second disc chilled until ready to repeat the process.
Bake cookies for 8-10 minutes, or until lightly puffed, adjusting the time depending on the size of the cookies.
Cool on pan for 5 minutes then transfer to a wire rack to cool completely.
Royal Icing: Combine powdered sugar and meringue powder in a medium bowl adding 3 tablespoons of water. Beat with an electric mixer on medium speed until creamy and smooth, about 1-2 minutes. Turn to medium high speed beating until white and fluffy. Add additional water, 1 teaspoon at a time, until desired consistency is reached. Likewise, if you need to thicken, add additional powdered sugar. Divide icing into 3 or 4 portions, and tint each with white, red or green gel food coloring. Decorate cookies as desired with icing, sprinkles and candy. Let dry. Store in an airtight container at room temperature. Do not stack.