Banana Nut Cake With Caramel Frosting

Ingredients

• 2 12 cups cake flour (i just added 3 T cornstarch when i measured flour )
• 1 18 teaspoons baking powder
• 1 teaspoon baking soda
• 1 teaspoon salt
• 23 cup shortening, i used butter
• 1 23 cups sugar
• 2 eggs
• 3 bananas, mashed
• 1 cup buttermilk
• 23 cup walnuts
• 12 cup brown sugar
• 6 tablespoons butter, melted
• 13 cup milk
• 1 teaspoon vanilla
• 12 teaspoon salt
• 1 12 cups powdered sugar
• 12 cup walnuts