Hummingbird Bakery Mother’s and Father’s Day Treats: An Extract from Cake Days

400g (14oz) icing sugar

100g (3½oz) cocoa powder

160g (5½oz) unsalted butter, softened

80ml (3fl oz) whole milk

Finely grated dark chocolate, to decorate

One or two 12-hole

deep muffin tins

Piping bag (optional)

1. Preheat the oven to 190°C (375°F), Gas mark 5, and line a muffin tin with muffin cases.

2. Using a hand-held electric whisk or a freestanding electric mixer with the paddle attachment, mix the butter, sugar, flour, baking powder and salt on a low speed until the mixture resembles fine breadcrumbs.

3. Place the remaining ingredients in a jug and whisk by hand, then pour three-quarters of this mixture into the dry ingredients and mix on a low speed to combine. Increase the speed to medium and keep mixing until smooth and thick, scraping the sides of the bowl occasionally. Add the remaining milk mixture and beat until combined and smooth.

4. Spoon the batter into the paper cases, filling them by two-thirds. Any remaining batter can be spooned into more cases in another tin. Bake in the oven for 18–20 minutes or until well risen and springy to the touch, then leave to cool completely.

5. While the cupcakes are cooking, make the filling. Pour the milk and vanilla essence into a saucepan and bring to the boil. Meanwhile, whisk the remaining ingredients together by hand in a bowl until smooth and well combined.

6. Once the milk is boiling, remove from the heat and pour 4–5 tablespoons into the egg-yolk mixture to loosen, then return this mixture to the pan of hot milk, stirring to incorporate.

7. Return the pan to the heat and bring to the boil, whisking constantly to prevent lumps. Boil for at least 1 minute to ensure the flour is properly cooked. Once thickened, tip the custard into a bowl and cover with cling film to prevent a skin forming, then leave to cool completely for 30–40 minutes.

8. To make the frosting, use the electric whisk or freestanding mixer with paddle attachment to slowly beat together the icing sugar, cocoa powder and butter until sandy in texture. Gradually pour in the milk, then increase the speed to high and whisk until soft and fluffy.

9. Using a sharp knife, make a hole in the centre of each cupcake about 2cm (¾in) in diameter and 3cm (1¼in) deep, reserving the scooped-out pieces of sponge. Pipe or spoon the custard into the hole in each cake, then replace the sponge lid, trimming it if necessary to ensure the top is fairly level. Divide the chocolate frosting between the cupcakes, smooth the tops with a palette knife and add a swirl. Sprinkle with grated chocolate to decorate.