Banana-Bran Muffins or Snack Cake

I had some oat bran, whole wheat flour and bananas that I needed to use. So I looked in a notebook in which I keep lots of muffin and quick bread recipe clippings. I have had this recipe since 1987 so I guess it was time to use it. It is from Woman's Day 2/10/87. I made it as a snack cake in a 9x9 pan. It was very tasty.

Banana-Bran Muffins
1 large egg
3/4 cup packed light brown sugar
1 1/2 cups mashed ripe bananas (3 large or 4 medium size)
1/2 cup raisins or chopped walnuts (I used raisins)
1/3 cup vegetable oil
1 teaspoon vanilla
3/4 cup all-purpose flour
3/4 cup whole-wheat flour
1/2 cup oat bran or wheat bran
2 teaspoons baking powder
1/2 teaspoon baking soda
1 teaspoon ground cinnamon
1/4 teaspoon salt
Heat oven to 375 degrees. Grease 12 regular size or 10 if you want large muffins or line with baking cups. With a wooden spoon beat egg and sugar in a medium size bowl until smooth. Add bananas, raisins, oil and vanilla. Beat until blended then let stand 1 minute or so. Thoroughly mix flours, bran, baking powder, baking soda, cinnamon and salt in a large bowl. Add banana mixture and fold in with a spatula just until dry ingredients are moistened. Spoon into muffin cups and bake 20 to 25 minutes, until brown and springy to the touch. Turn out onto a rack to cool.