How to Make It
Combine milk and chocolate in a medium saucepan over low heat and stir gently until chocolate melts, about 4 minutes. Whisk in malted milk powder and vanilla extract. Transfer mixture to a bowl and let cool 5 minutes. Place bowl in freezer until the top of the mixture is set, about 4 hours.
Pour the chocolate mixture into a blender and add ice. Blend until smooth. Pour into glasses and top with whipped cream and chocolate shavings.