Banana Filling for cake (Thelma Mosely)

2 egg yolks, beaten                             1 1/2 cups of sugar

4 1/2 Tablespoons of cream      4 real ripe bananas

3 Tablespoons of butter

Mash the bananas.  Add the other ingredients.  Cook in a saucepan until thickened.  Stirring constantly.  Spread between cake layers.