Coffee and Walnut Swiss Roll

With roasted walnuts and coffee-spiked whipped cream, this Swiss roll recipe from the hit BBC series, Britain's Best Home Cook, is a sophisticated dinner party dessert.

Britain's Best Home Cook
From the book Britain's Best Home Cook
By

Introduction

A delicious combination of coffee and walnuts in this grown-up version of a Swiss roll, which is best enjoyed on the day of baking.

Serves 6-8

Ingredients

160g (5½oz) walnut halves
140g (5oz) caster sugar, plus extra for dusting
4 eggs
140g (5oz) plain flour, plus extra for dusting
3 tbsp unsalted butter, melted, plus extra for greasing
For the filling:
2 tsp instant coffee granules
2 tsp boiling water
170ml (6fl oz) double cream
25g (1oz) icing sugar, plus extra for dusting

Essential kit

You will need: a 34 × 22cm (13 × 8½in) Swiss roll tin, an electric whisk or stand mixer with whisk attachment.

Instructions

Prep time: 35 minutes, plus cooling. Cook time: 20 minutes

 1. Preheat the oven to 200˚C/180˚C fan/gas 6. Butter a 34 × 22cm (13 × 8½in) Swiss roll tin and line with baking parchment.

2. Roast the walnuts in the oven for 5 minutes, until a shade darker and aromatic. Let cool, then finely chop half the walnuts.

3. Using an electric whisk or stand mixer with whisk attachment, whisk the sugar and eggs together until pale, thick and creamy and at least doubled in volume. This will take 8–10 minutes.

4. Sift a few tablespoons of flour at a time into the bowl, and very gently fold into the mixture. When all the flour has been incorporated, gently fold in most of the chopped walnuts and the butter. Be patient and do not knock out too much air.

5. Transfer the mixture to the prepared tin and smooth out using the back of a spoon. Bake for 10–12 minutes until golden brown and slightly springy to the touch. Do not leave to cool.

6. While the sponge is still warm, place a large sheet of baking parchment on your work surface and dust liberally with caster sugar. Supporting it with your hand, carefully invert the sponge onto the parchment. Gently peel off the top layer of parchment. Trim the very outer edge of the sponge with a sharp knife. Score a line 2cm (¾in) in from the short end of the sponge closest to you, but do not cut all the way through. Using the parchment, tightly roll up the sponge and leave to cool, seam side down.

7. For the filling, mix the coffee and boiling water to form a paste. In a large bowl, whisk together the cream, icing sugar and coffee paste until soft peaks form. Cover and refrigerate until needed.

8. Gently unroll the cooled sponge. Spread the cream over the surface, leaving a 1–2cm (½–¾in) border all round. Scatter over the remaining chopped walnuts. Roll up the sponge again and place on a serving plate, seam side down. Arrange the whole walnuts on top and dust with icing sugar before serving.

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