01 -
Preheat the oven to 350F. Prepare two 8-inch round cake pans by coating with nonstick spray and lining the bottoms with parchment paper. If you have cake strips, wrap them around the pans.
02 -
In a medium bowl, whisk together the flour, baking powder, baking soda, salt, and all the spices (cinnamon, cardamom, ginger, nutmeg, and cloves).
03 -
In a large mixing bowl, mix the brown sugar, oil, and apple sauce until well combined. Add eggs one at a time, then mix in the vanilla.
04 -
Mix in half of the dry ingredients until combined. Add the sour cream, then mix in the remaining dry ingredients. The batter should be fairly thin.
05 -
Divide the batter between the prepared pans, filling each about 2/3 full. Bake for 35-40 minutes or until a toothpick comes out clean.
06 -
While cakes bake, brown the butter in a saucepan over medium heat until amber colored. Chill until firm but spreadable.
07 -
Mix the browned butter and cream cheese until smooth. Gradually add powdered sugar and vanilla until desired consistency is reached.
08 -
Once cakes are completely cool, level tops and split each into two layers. Stack with frosting between layers, then crumb coat the entire cake. Chill 20-30 minutes, then apply final frosting layer and decorations.