Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9x13 inch baking pan.
In a large bowl, cream together the butter and sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla. Combine the flour, baking powder and salt; stir into the creamed mixture alternately with the milk. Fold in the mashed bananas.
Spread the batter into the prepared pan. In a small bowl, mix together the brown sugar and cinnamon; sprinkle over the top of the cake. Bake for 30 to 40 minutes in the preheated oven, or until a toothpick inserted into the center of the cake comes out clean.
Interesting Facts
Bananas are the world’s most popular fruit.
Bananas are a great source of potassium.
The average American eats about 27 pounds of bananas each year.