2 1/2 cups milk 1/2 cup granulated sugar 1/2 cup flour 1/4 teaspoon salt 2 teaspoons vanilla extract 1 cup butter
Heat milk in double boiler. Stir hot milk gradually into the sugar, flour and salt mixed together. Return to boiler; cook about 10 minutes, stirring constantly. Cool; add vanilla extract. Cream butter; add the custard to butter gradually, stirring until smooth.
