Technical Challenge Week 1 – Mini Rolls

2017-09-04 21.07.13-2   2017-09-04 21.05.04-3

So here we are – Series 8 of The Great British Bake Off has started! As a personal challenge this year, I am going to attempt the technical challenges from each week and post my results.

As mini rolls are so readily available in the supermarket, it had never crossed my mind to make them from scratch! I used Prue’s recipe but made a couple of adjustments to emulate store-bought mini rolls. In this recipe, the peppermint filling is substituted for vanilla, and they are coated in milk chocolate instead of a combination of plain and milk chocolate.

Overall, they were trickier to make than I expected – it was quite fiddly to roll the sponge without tearing it, and to ensure the rolls were completely coated in chocolate. I am quite pleased with my results though – hopefully I wouldn’t be the first to leave the tent!

Makes 12 Rolls

Ingredients

For the Cake

  • 60g (2/3 cup) cocoa powder
  • 30g (2 tbsp) butter, melted
  • 1 tsp vanilla extract
  • 4 tbsp water (boiled)
  • 6 large eggs
  • 150g (3/4 cup) caster sugar

For the Filling

  • 150g (1 cup) butter, softened
  • 300g (21/2 cups) icing sugar
  • 1 tsp vanilla extract

For the Coating

  • 400g (2 cups chopped) milk chocolate
  •  100g (1/2 cup chopped) white chocolate

Method

Cake

  1. Preheat the oven to 180°C (360°F) / 160°C (320°F) fan. Grease two swiss roll tins (30cm x 20cm / 12″ x 8″) and line with greaseproof paper.
  2. Mix together the cocoa powder, butter, vanilla extract, and water.
  3. Separate the eggs. Add the egg yolks and 100g (1/2 cup) sugar together and whisk until smooth and frothy. Mix into the chocolate mixture.
  4. In another bowl, whisk the egg whites and remaining sugar until stiff peaks form.
  5. Beat one-third of the egg white mixture into the chocolate mixture, until mixed thoroughly.
  6. Carefully fold the remaining egg white into the mixture, making sure to keep as much air in the batter as possible.
  7. Pour the mixture into the two tins and level gently with a spatula. Bake for 12-18 minutes, then leave the tins to cool completely on wire racks.

Filling & Rolling

  1. Combine the butter, icing sugar, and vanilla extract until mixed, then beat vigorously until pale and fluffy.
  2. Flip the cakes onto fresh greaseproof paper and remove the old paper. Score a line 4cm (approximately 13/4“) from each short end of the cake, so you have two lines on each cake.
  3. Spread the buttercream evenly over the top of both cakes, and roll one side towards the centre using the greaseproof paper. Turn the cake and repeat on the other side so they meet in the middle and cut along this line. Repeat with the other sponge so that you have four long rolls.
  4. Even the ends by cutting off a small amount, then divide each roll into three. Place these seam-side down onto a cooling rack and chill in the fridge for 15 minutes to set.

Coating

  1. Melt the milk chocolate over a pan of simmering water. Place the cooling rack on top of a baking tray to catch the excess, and pour the chocolate over the rolls to cover.
  2. Once the milk chocolate has set, melt the white chocolate and place into a disposable piping bag. Cut off the tip and pipe lines across the top of the rolls. Leave to set.

This recipe was adapted from Prue’s Chocolate Mini Rolls Recipe, which can be found on The Great British Bake Off’s website.