Preheat the oven to gas 4, 180°C, fan 160°C.
Line a 12-hole muffin tin with paper cases.
Add sifted flour, cocoa powder, baking powder and sugar into a large bowl.
Stir to combine thoroughly.
Add to the bowl, eggs, milk and sunflower oil.
Mix well, you might need to add some more milk to create a batter, this depends on the size of eggs you have used.
Divide the mixture between the cases.
Push a mini Malteaser egg into each muffin.
Bake for around 15-20 mins or until the muffins pass the clean skewer test.
Leave to cool completely.
Using a nozzle of your choice, pipe the icing onto the muffins.