Maxine'S Banana Stack Cake

Ingredients

• 2 1/2 cups cake flour
• 1 2/3 cups sugar
• 1 1/4 teaspoons baking soda
• 1 1/4 teaspoons baking powder
• 1 teaspoon salt
• 1 teaspoon ground cinnamon
• 2/3 cup canola oil
• 2/3 cup buttermilk
• 1 1/4 cups bananas
• 2 eggs
• 1/2 cup english walnuts
• 1 (8 ounce) package cream cheese
• 1/2 cup butter (not margarine)
• 1 (1 lb) box confectioners' sugar
• 1 teaspoon vanilla extract
• 1 cup pecans