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["cream butter and sugar -- add mashed ripe banana -- set aside.", "whisk together flour, baking powder,.add to banana mixture --", "add buttermilk, baking soda and chopped walnuts -- beat well.", "add one egg at a time, mixing well after each egg --", "pour into a greased 13x9"" baking pan --", "bake at 350* for 30-35 minutes -- test with toothpick inserted near the center .cool on wire rack.", "to prepare BROWN SUGAR FROSTING:.", "combine brown sugar, milk, and butter and boil 1 minute -- let cool --", "the beat till creamy -- adding vanilla and enough powdered sugar till easily spreadable --", "frost cake when cool -- ."]