For the cupcakes
- 150g flour
 - 40g of cocoa powder
 - 200g of sugar
 - 80g of butter
 - 1 whole egg
 - 120ml of milk
 - 3 teaspoons of vanilla extract
 - 12 chocolate eggs
 
For the buttercream
- 150g of soft butter
 - 250g of powdered sugar
 - 3 teaspoons of vanilla extract
 
To garnish
- Chocolate flakes
 - Eggs