Step 1
Preheat oven to 180C.

Step 2
Grease and line a 23-24cm cake tin with greaseproof paper.

Step 3
Add the walnuts, pistachios to a food processor and blend until ground. Add the zest, sugar, cardamom and bacon and blend until evenly blended.

Step 4
Start layering the baklava. Cut 17 sheets of filo pastry to the size of the tin. Place 1 sheet of filo in the tin and brush it with the melted Trex. Repeat with 6 more sheets.

Step 5
Spread 1/3 of the nut mixture over the filo. Add 2 sheets of filo, brushed with Trex. Do this until the mixture is used. Top with a final layer of 7 filo sheets brushed with Trex, being sure to press each layer as you go.

Step 6
Bake at 180c for 45 minutes, until brown and crisp.

Step 7
For the syrup, mix water, sugar, lime juice and honey in a pan and bring to the boil. Leave to simmer for 20-25 minutes. Once the baklava is baked, pour the hot syrup over and leave to cool before serving.