Butterscotch Cream Pie Filling

Combine brown sugar and butter in a saucepan. Heat over low heat, stirring, until the butter is melted and the ingredients are blended. Prepare the basic vanilla cream filling recipe, but omit all the sugar and increase the starch to 1½ oz (45 g). As the mixture comes to a boil in step 5, gradually stir in the brown sugar mixture. Finish as in the basic recipe