Preheat oven to 350 degrees Fahrenheit. Cover a cookie sheet in parchment paper (if desired).
In a medium bowl, stir together flour, ginger, cinnamon, baking powder, and salt. Set aside.
In a separate medium bowl, beat together sugar and butter until fluffy. Beat in flax egg. Add molasses and beat to combine.
Add dry ingredients into the wet and mix until combined (no streaks of flour remain).
Spoon out dough, 1 Tablespoon at a time, and roll into balls. [You can also roll out the dough to ¼” thick and refrigerate it for 20 minutes before cutting with cookie cutters]. Arrange on cookie sheet two inches apart from each other.
Bake at 350 degrees Fahrenheit until center of cookies are no longer shiny, about 7-10 mins.