Drink this thick, ultra-rich shake through an oversized straw or employ a spoon to eat it like ice cream.
Place chocolate and oil in a microwave-safe bowl and zap, in 10-second bursts, to melt. Stir smooth, then let cool 5 minutes.
Scoop ice cream into a blender or food processor. Drizzle chocolate over ice cream; it will harden. Add half-and-half, malted milk powder, and vanilla. Blend until smooth and studded with chocolate bits. Pour into 2 glasses. Slurp.