Heat oven to 350 degrees.
In a medium bowl add flour, nutmeg, cinnamon, allspice, baking soda, baking powder and salt, whisk together to combine, set aside.
In a large bowl add sugar and butter; beat at medium speed until light and fluffy about 4-5 minutes. Add one egg at a time, beating well after each addition, then beat in vanilla.
At low-speed, beat in flour mixture in 3 parts alternately with sour cream, beginning and ending with flour mixture. Spoon and gently spread batter over bananas. Bake 45-55 minutes or until cake is golden brown and toothpick inserted in the center comes out clean.
Cool in pan on wire rack for 15 minutes, run a small knife around the edge of cake; carefully invert cake onto serving plate. Serve warm with vanilla ice cream or with fresh whipped cream.
*you can use 1/2 tsp. rum extract instead. Enjoy!!!!