Instructions:
1. Preheat the oven to 180°C (160°C fan/350°F/Gas 4). Grease and line a 30x23cm (12x9in) traybake tin with baking parchment.
2. In a heatproof bowl set over a pan of simmering water, melt the butter and chocolate together, stirring occasionally until smooth.
3. In a separate bowl, whisk together the sugar and eggs until pale and thick.
4. Fold in the melted chocolate mixture, then sift in the flour and coffee granules, and fold again until well combined.
5. Stir in the chopped walnuts, if using, then pour the mixture into the prepared tin and level the surface.
6. Bake for 20-25 minutes, or until the traybake is just set but with a slight wobble in the middle.
7. Allow to cool in the tin before cutting into squares and serving.

Recipe Notes and Tips

For a more intense coffee flavor, you can increase the amount of instant coffee granules used in the recipe. Additionally, you can sprinkle extra chopped walnuts on top of the traybake before baking for added crunch and texture. This recipe can be easily adapted to suit your preferences, so feel free to experiment with different variations to create your perfect Coffee Fudge Traybake.

When serving this traybake, consider pairing it with a dollop of whipped cream or a scoop of vanilla ice cream to complement the rich fudgy texture. You can also drizzle a coffee-infused caramel sauce over the traybake for an extra touch of indulgence.

To enhance the presentation of your Coffee Fudge Traybake, dust the top with cocoa powder or icing sugar before serving. This simple garnish adds a touch of elegance to the dessert and makes it visually appealing to your guests.

Experiment with different types of chocolate to create unique flavor profiles for your traybake. Dark chocolate offers a more intense cocoa flavor, while milk chocolate provides a milder sweetness. You can also try using white chocolate for a creamy and indulgent twist on this classic recipe.