Preheat oven to 350 degrees F and spray a 9x5 loaf pan with non-stick spray, set aside.
In a medium size mixing bowl add flour, baking soda, cinnamon, allspice, nutmeg, kosher salt, and cloves. Whisk together to combine, and set aside.
In the bowl of an electric mixer add melted butter, dark brown sugar, and molasses. Beat on medium heat until the mixture is combined, about 3 minutes.
Add in the milk, freshly grated ginger, vanilla bean paste, and maple extract. Mix to combine, about 1 minute.
Mix in eggs, one at a time, scraping down the sides of the bowl as necessary.
Mix in mashed bananas.
With the mixer on low, slowly add the flour until just combined.
Fold in the diced crystallized ginger.
Add the batter to the prepared loaf pan and bake for 45-55 minutes or until the middle of the bread is set and when a toothpick inserted in the middle comes out clean.