Coat a 8x8” baking dish with cooking spray and dust with flour to coat evenly. Set aside.
In a large bowl sift the dry ingredients together. Add the water, molasses, melted butter and egg whites. Beat with electric mixer on medium until combined then for 2 minutes on high. Fold in chopped crystallized ginger chunks (optional).
Spread into prepared baking dish. Bake for 20 minutes or until a toothpick comes out clean. Cool on a rack for 10 minutes before cutting.
Serve with whipped cream or your favorite whipped topping if desired.
Notes
The crystalized ginger may be omitted for less sugar. Nutrition information is without.