Preheat at 350º F and spray a 9x9 baking dish with baking spray or line the dish with parchment paper. Set aside.
In a mixing bowl, combine the dry ingredients: flour, baking soda, salt, cinnamon, ginger, and cloves.
In a large microwave-safe bowl, melt the butter.
Once melted, mix in the molasses and granulated sugar.
Beat in the eggs until just combined.
Mix in the cocoa powder until mixed.
Gently stir in the bowl of dry ingredients until the batter is smooth.
Pour the batter into your prepared pan, spreading it evenly throughout the pan.
Bake for 15 to 20 minutes.
Check the center with a toothpick to ensure that they are done. Don't overbake or they will come out dry.
Carefully remove the brownies from the pan by either inverting the pan to remove the brownies if using baking spray or using the parchment paper to gently lift them out of the pan.
Allow the gingerbread brownies to cool completely before dusting with powdered sugar and slicing.
Notes
Do not overbake. Check at 15 minutes. Moist crumbs on the toothpick means fudgy.
Use unsulphured molasses, not blackstrap.
Cool completely before dusting with powdered sugar.
Store at room temperature up to 4 days. Refrigerate if frosted with cream cheese frosting.