Lady Lock Filling I

1 cup milk

3 tablespoons all-purpose flour

1 cup shortening

1 cup white sugar

1 teaspoon vanilla extract

In a saucepan combine the milk and flour, stir until blended. Cook over low heat until thick. Let cool.

Beat the sugar and the shortening until no sugar crystals remain. Add the cooled milk mixture, slowly beating until fluffy. Add vanilla extract to taste.