Granny's Banana Pudding

1 c. sugar
2 tbsp. (heaping) flour
3 egg yolks
2 c. milk
1 tbsp. vanilla
1 box vanilla wafers
3-5 bananas

Layer bananas, then wafers in oven proof medium bowl. In saucepan add sugar and egg yolks; mix well adding milk when needed. Add flour to egg mixture, then the rest of the milk; mix well. Add vanilla, stir constantly on medium heat until thick and smooth. Pour over wafers and bananas.Make topping from egg whites. Beat egg whites until stiff. Add 3 tablespoons sugar. Beat again. Add 1 teaspoon vanilla; beat again. Lightly brown in oven.  Mama used mini marshmallows as a topping sometimes.  Just spread them over the top of the pudding and lightly brown them in the oven.