Preheat oven to 350 degrees.

Lightly spoon flour into dry measuring cups; level with a knife. Combine

flour and the next 4 ingredients (through salt) in a large bowl; stirring

well with a whisk. Stir in oats.

Combine mashed banana, buttermilk, oil, vanilla, and eggs; add to flour

mixture. Stir until just moist.

Spoon batter into a 8x4-inch loaf pan coated with cooking spray.

Bake at 350 degrees for 55 minutes, or until a wooden pick inserted in

center comes out clean.

Cool 15 minutes in pan on a wire rack; remove from pan. Cool completely on

a wire rack.