Walnut and coffee Swiss roll
This novel Swiss roll combines coffee cream with the delightful crunch of roasted walnuts, some cooked into the sponge and some added as decoration.
- 160g/5¾oz walnut halves
- 140g/5oz caster sugar, plus extra for dusting
- 4 free-range eggs
- 140g/5oz plain flour, plus extra for dusting
- 3 tbsp unsalted butter, melted, plus extra for greasing