Sift baking powder, flour and cocoa into a bowl

Put in the brown sugar and stir the mixture

Melt the butter (in another bowl)

Beat eggs and milk together

Make a well in the middle of the dry ingredients (like a hole in the middle)

Add melted butter, egg mixture and chocolate chips into the well

Mix them, but not too much

Either use a greased muffin tin or a decorative muffin paper and fill them up 3/4 full with the mixture

Bake them for 20min or until muffins spring back when lightly touched at 190°C (you may want to preheat the oven before hand)

p.s. They taste better when served warm