Preheat oven to 325 F.
Melt butter and allow it to cool to room temperature.
Beat in the sugar and molasses until combined.
Add the egg and beat. Scrap down the bowl.
Add the flour, baking powder, salt, ginger, and cinnamon. Mix until just combined.
Wrap and refrigerate your Gingerbread Cookie dough
Roll the dough on a lightly floured surface to ¼ inch thickness.
Cut out gingerbread people.
Place the cookies on a parchment-lined baking sheet. Refrigerate for 15 minutes.
Add raisins or cherries for buttons.
Bake for 10 to 12 minutes. Cool before decorating with royal icing.