Sift the cocoa powder into a bowl and pour over the boiling water. Mix until you have a smooth paste. Add the eggs, butter and Equal® Monk Fruit and whisk with an electric hand whisk until combined. Sift in the plain flour and baking powder and mix to combine. Mix through the milk.
Line a muffin tin with 12 paper cupcake/muffin cases and divide the mixture between the cases. Transfer to the oven and bake for 15 minutes, or until risen. Cool in the cases on a wire rack.