Ingreadient

• 2 tablespoons all-purpose flour
• 1 cup milk
• 2/3 cup sugar, divided
• 2/3 cup shortening
• 1/3 cup butter, softened
• 3/4 teaspoon vanilla extract
• dash salt
• 2 prepared 9-inch round chocolate cakes
• 1/4 cup butter, cubed
• 1/4 cup baking cocoa
• 3/4 cup confectioners' sugar
• 2 to 4 tablespoons milk