Pre heat oven to 350 degrees farenheit. Grease a 9 x 13 pan with cooking spray and line with parchment paper.
In a large bowl, cream together granulated sugar and butter until light and fluffy
Add slightly beaten egg and molasses, mix well until combined.
In a medium size bowl, sift together flour, baking soda, salt, and spices.
Add dry ingredients to wet mixture in three batches. Stir to combine with spatula, batter will be thick.
Slowly add hot water to batter and stir and until smooth. Batter will be very thin.
Pour batter into prepared pan and bake until 30 to 40 minutes or until a toothpick inserted in the center comes out clean.
Allow cake to cool slightly in pan on wire rack. Slice into sqaures and serve warm with whipped cream, powdered sugar, or vanilla ice cream. Or eat it plain!!