Chocolate Filling Recipe ingredients

• 2½ squares unsweetened chocolate
• 1 cup powdered sugar
• 3 tablespoons milk
• Yolk 1 egg
• ½ teaspoon Vanilla

To prepare this Chocolate Filling Recipe, first melt chocolate over hot water, add one-half the sugar, and milk; add remaining sugar, and yolk of egg; then cook in double boiler until it thickens, stirring constantly at first, that mixture may be perfectly smooth. Cool slightly, flavor, and spread.