Preheat the oven to 350 degrees. Spray a Bundt pan with cooking spray or butter and flour the pan. Set aside.

In a medium bowl combine the flour, baking soda, baking powder, and spices.

In a large bowl mix together the eggs, brown sugar, and butter. Mix well.

Add half of the flour mixture to the butter mixture and mix well.

Stir in the milk and molasses.

Add the remaining flour mixture and mix until well combined.

Pour the batter into the prepared pan and bake for 45-50 minutes. The cake is done when a toothpick inserted into the middle comes out clean.

Remove from the oven and cool 15 minutes.

Use a butter knife and run it around the edges of the cake. Flip the cake over onto a wire cooling rack and cool completely.

To make the glaze whisk together the powdered sugar, vanilla, cinnamon (if using), and 1 tablespoon milk. Add remaining milk if needed and whisk until desired consistency is reached.

Pour or drizzle glaze over top of the cake.