- 1 (18.25 ounce) package devil's food cake mix
- 1 cup mashed bananas
- 1/3 cup vegetable oil
- 3 eggs
- Preheat oven to 350 degrees F (175 degrees C). Grease and flour one 13×9 inch pan.
- Beat cake mix, mashed bananas, oil and eggs with an electric mixer on low speed for 30 seconds. Increase speed to medium and beat for 2 more minutes. Pour the batter into the prepared pan.
- Bake at 350 degrees F (175 degrees C) for 33 to 36 minutes or until a toothpick inserted near the center comes out clean. Let cake cool then frost with your choice of frosting, if desired.