Banana Cake With Caramel Frosting
["1 yellow cake mix", "2 c. brown sugar, firmly packed", "1/4 tsp. salt", "4 Tbsp. butter or margarine", "2/3 c. milk", "2 Tbsp. butter or margarine", "2 tsp. vanilla", "confectioners sugar (if needed)", "bananas, peeled and sliced"]
["Cook cake mix according to package directions in 2 (8-inch) pans.", "After cake is done, let cool and then slice each cake in two to form 4 layers."]
["yellow cake", "brown sugar", "salt", "butter", "milk", "butter", "vanilla", "confectioners sugar", "bananas"]