Mash bananas. Set aside.
Combine cake mix and baking soda in a large bowl. Add the rest of the ingredients and beat on low speed for 1 minute until combined.
Beat at medium speed for 4-5 minutes.
Pour batter into 2 greased and floured 9 inch cake pans.
Bake in 350 degree preheated oven for 30-35 minutes.
Cool and frost.
Not a NESTLÉ®-tested recipe.