I was thinking about milkshakes when I saw my jar of Horlicks malted milk powder in the cupboard, and chocolate malted milkshakes being my all time favourite, became a muffin.
Preheat oven to 180 degrees C and line muffin tins with patty pans (I use large patty pans and get about 15 muffins, small patty pans should get 24).
Using an electric mixer, beat all the muffin ingredients together except for the choc bits. Mix until well combined. If you think the batter is a bit thick, add the extra milk. Stir in the choc bits.
Evenly fill patty pans. Cook 20 mins or until skewer comes out clean.
Icing:
Mix all together and pipe or spoon onto muffins then pop a malteser on top.