1Preheat the oven to 350 degrees. In an electric mixer or large bowl mash the bananas with a potato masher.
2Stir in the eggs, vegetable oil, rum and sour cream.
3Add the remaining ingredients. Beat with the electric mixer for 2-3 minutes, or until combined and smooth.
4Grease a bundt pan very well. Pour the batter in evenly. Bake for 35-45 minutes or until a knife comes out clean. To garnish sprinkle the cake with powdered sugar mixed with a bit of cinnamon. Enjoy! Serves 8.