Preheat the oven to 350 F. In a medium bowl, whisk together flour, salt, baking soda, cinnamon, ginger, and cloves. In a large bowl, combine butter with granulated and brown sugar, and molasses. Mix until fluffy.
Add in egg and vanilla extract, and mix until smooth. Add in the flour mixture, and mix until fully combined. Set aside.
In a large bowl, whisk together flour, sugar, cocoa powder, salt, and baking soda. Add in eggs, melted butter, and vanilla extract, and whisk until smooth. Pour the brownie batter into a greased 8-inch square baking dish.
Evenly spread the gingerbread cookie dough over the brownie batter. Bake for 25-30 minutes.