Whoopie Pie with Ermine Filling

          1 Batch of Chocolate Chocolate Chip Muffins

          

          1 cup sugar

          5 tablespoons flour

          1/4 teaspoon salt

          1 cup milk

          1 cup butter, softened

          1 teaspoon vanilla

          Prepare muffins using a muffin top pan.

          For filling, in a sauce pan combine sugar

          flour and salt, whisk together and cook over

          medium heat for about a minute. Whisk in
          milk until smooth. Continue cooking, whisking

          constantly, until mixture is a pudding like

          consistency. Pour mixture into a glass container

          and cover with plastic wrap directly on the 

          surface to prevent a skin from forming. Cool

          to room temperature.

          

          In a bowl whip butter on high until light and fluffy.

          Reduce mixer to medium and add cooled mixture

          1 spoonful at a time, mix completely each time. Add

          vanilla and whip until smooth. 

          Place filling between 2 muffin tops.