Weigh or lightly spoon flour into dry measuring cups; level with a knife. Combine flour and the next 5 ingredients (through salt) in a large bowl; stir with a whisk. Make a well in center of flour mixture.
Combine yogurt, banana, oil, vanilla, and egg in a small bowl; stir until well blended. Add yogurt mixture to the flour mixture in large bowl, stirring just until moist.
Pour the batter into a 9-inch square metal baking pan coated with cooking spray. Bake at 375° for 20 minutes or until a wooden pick inserted in the center comes out clean. Cool cake in the pan 10 minutes on wire rack; remove from pan. Cool completely on wire rack. Serve with whipped topping.
You May Like
Sign Up for our Newsletter
Join our newsletter for free recipes, healthy living inspiration, and special offers.