Set your oven rack to the middle position. Preheat the oven to 350°F (177°C). Spray an 8 inches square baking pan well with nonstick cooking spray and set aside. Alternatively you can line the pan with parchment paper.
In a medium mixing bowl, whisk together all the liquid ingredients (brown sugar, oil, applesauce, eggs, vanilla extract, and buttermilk) until fully combined.
Sift flour, baking powder, baking soda, salt and all the spices over wet ingredients. You can also whisk all the dry ingredients separately in another mixing bowl and then add it to your wet ingredients. Fold using a spatula only till flour disappears into the cake batter. Baking times can vary when this cake bakes. So keep an eye on your cake, it is ready when it passes toothpick test. Only a few moist crumbs should come attached with the tooth pick when you prick it in the cake. ¾ teaspoon Ground cinnamon, ½ teaspoon Ground Ginger, ⅛ teaspoon Ground Cloves, ⅛ teaspoon Ground Nutmeg, ⅛ teaspoon Ground cardamom, ⅛ teaspoon Ground Star Anise
Pour cake batter in pre prepared pan and bake for 35-40 minutes. Baking times can vary when this cake bakes. So keep an eye on your cake, it is ready when it passes toothpick test. Only a few moist crumbs should come attached with the tooth pick when you prick it in the cake.
If you notice the top of cake is browning too quickly in the oven, cover it loosely with an aluminium foil. Once baked, take the cake out of oven and allow it to cool in the pan for 5 minutes. Then flip the cake out on a wire rack and allow to cool completely before frosting.