In a microwave save glass bowl, mix together the chopped almond bark and 1/4 cup of the milk. Microwave for 1 minute and stir. Then microwave at 20 second intervals, stirring after each until it’s completely melted.
Be careful not to overheat – it burns easily!! (ask me how I know!)
In a mixing bowl, cream together the butter, shortening and vanilla.
Gradually add the powdered sugar as you beat the frosting. Scrape down the sides of the bowl often. It will be dry and thick.
Add the remaining 1/4 cup of milk and beat until light and fluffy.
Slowly pour in the chocolate until well incorporated. Cover until ready to use.