Banana Icing for Cake(Mae Eubanks)

4 medium bananas mashed                  1 cup of sugar

1 lemon juiced                                    1 medium tub of Cool Whip

Cook bananas, sugar and lemon juice for 10 minutes over low heat.  Let cool completely.  Stir in the Cool whip and mix well.  This icing makes enough for the tops (only) of a 4 layer cake.