Mashed banana gives this dessert extra moistness.
Preheat oven to 350°F. Grease and flour 12-cup Bundt pan. Sift first 4 ingredients into medium bowl. Whisk oil, 1 cup sugar, brown sugar and eggs in large bowl until well blended. Mix in dry ingredients. Add carrots, pineapple, banana and pecans and blend well. Transfer batter to prepared pan. Bake until tester inserted near center of cake comes out clean, about 1 hour. Let cake stand in pan 10 minutes. Turn out cake onto rack and cool.
Beat cream cheese, powdered sugar, butter and 1/4 teaspoon cinnamon in medium bowl until smooth. Spread frosting over cake. Sprinkle with additional cinnamon. (Can be prepared 1 day ahead. Cover with cake dome and refrigerate.)