Diane'S Banana Cake With Sour Cream Filling
["1 1/2 c. sugar", "2 c. flour", "1/2 tsp. salt", "1/2 tsp. baking powder", "3/4 tsp. baking soda", "1/2 c. shortening", "1/4 c. buttermilk", "1 c. mashed bananas", "2 eggs, beaten", "1 tsp. vanilla"]
["Preheat oven to 375\u00b0.", "Grease and flour two 9-inch round pans."]
["sugar", "flour", "salt", "baking powder", "baking soda", "shortening", "buttermilk", "bananas", "eggs", "vanilla"]