Fast Fixin Double Banana Cake

1 pkg Banana Cake Mix (or Yellow)
2 ripe medium bananas, mashed
1/4 c. oil
2 eggs
1/2 c water
1 t. vanilla
1/2 c. chocolate chips

Preheat oven to 350 degrees.

Pour oil into 13x9x2 inch pan. Stir remaining ingredients into pan; stir with fork or spoon until blended.  (about 2 min).

Bake at 350 degrees for 35-45 min. until toothpick inserted comes out clean.