Black Bottom Banana Bars
["1/2 c. margarine", "1 c. sugar", "1 egg", "1 tsp. vanilla", "1 1/2 c. mashed ripe bananas (3)", "1 1/2 c. flour", "1 tsp. baking powder", "1 tsp. baking soda", "1/2 tsp. salt", "1/4 c. baking cocoa"]
["In mixing bowl, cream butter and sugar.", "Add egg and vanilla. Beat until thoroughly combined.", "Blend in the bananas.", "Combine the flour, baking powder, baking soda and salt.", "Add to creamed mixture and mix well."]
["margarine", "sugar", "egg", "vanilla", "mashed ripe bananas", "flour", "baking powder", "baking soda", "salt", "baking cocoa"]