01 - Preheat oven to 350°F. Grease and flour a 9x13-inch baking pan.
02 - Whisk together flour, ground ginger, cinnamon, cloves, nutmeg, baking soda, and salt in a medium bowl. Set aside.
03 - In a large bowl, cream softened butter and brown sugar until light and fluffy.
04 - Beat in eggs one at a time. Mix in molasses and vanilla extract until fully combined.
05 - Gradually add dry ingredients to wet mixture, stirring just until combined.
06 - Stir in hot water until batter is smooth.
07 - Pour batter into prepared pan and smooth the surface evenly.
08 - Bake for 30 to 35 minutes, or until a toothpick inserted in the center comes out clean.
09 - Allow to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.