Preheat oven to 350°F. Grease 9 x 5 x 3 inch loaf pan.
In a large mixing bowl, cream vegetable oil, sugar and eggs together. Mash bananas and mix with dry pudding. Add this to the creamed mixture.
In a separate bowl, blend dry ingredients. Add dry ingredients alternately with buttermilk to the creamed mixture stirring until just blended. This can be done with a large spoon. Fold in nuts and pour into greased 5x9'' loaf pan, smoothing top of batter.
Bake at 350°F for 55-65 minutes or until toothpick inserted comes out clean. Cool pan on a wire rack 10 minutes. Remove bread from baking pan and allow to cool completely before slicing.
Notes: Check the edges, if it appears too dark wrap the outer edge of the pan with foil to prevent burning.