Heat oven to 350°. Grease a 9 inch square baking pan.
Beat together sugar, bananas and oil; add eggs, beating well after each addition.
Add flour, baking powder, salt, soda, cinnamon and cloves; mix well. Stir in oats and carrots.
Pour into prepared pan, sprinkle with nuts, if desired. Bake 40-45 minutes or until done.
NOTE: You can double the recipe for a 9x13-inch pan and then you will have some batter left over for cupcakes or small loaf.
For frosting, beat butter and cream cheese until smooth, add 1 smashed banana. Add powdered sugar and vanilla. If it is too thick for spreading, add another banana or a little milk. Sprinkle nuts over the top, if desired.