Mix sugar and flour in a saucepan. Separate eggs,reserving the whites for meringue. Stir yolks with a fork until well blended. Place saucepan on low heat, stirring often until custard forms and the mixture thickens. Remove from heat. Add butter. Allow to cool. Add vanilla.
Line a 9"x51/2"x21/2" glass baking dish with vanilla wafers. Slice bananas over wafers. Repeat twice. Pour cooled custard over wafers/bananas.
cream of tarter.
1/2 cup sugar.
1/2 teaspoon vanilla.
3 egg whites left from custard.
Add a couple of sprinkles of cream of tartar to 3 egg whites,left from custard. Using an electric mixer,beat until frothy. Continue beating,adding 1/2 cup sugar and 1/2 teaspoon vanilla. Spread over top. Bake until brown for 10 or 15 minutes at 375 degrees.