Scrape seeds from vanilla bean and incorporate with the melting coconut oil.
In large bowl add cacao powder, melted coconut oil, salt, and powered sweetener.
Use wire whisk and blend together until very smooth.
When smooth, taste for sweetness. Add agave or powdered sweetener to suit your taste.
Pour half into 8x8 inch tray that has been lined with cling wrap, and place in freezer. Set the other half aside.
Second layer
Place nuts in food processor and pulse until nuts are small chunks. Ad balanced amount of remaining ingredients, and pulse until it stays together when pinched between your fingers.
Put on top of chocolate layer and press down firmly.
Third layer
Blend by hand and spread on top of second layer.
Forth layer
Pour remain chocolate over third layer and leave to set in the freezer.
Recipe by The Life of Clare at http://www.thelifeofclare.com.au/chocolate-caramel-slice-oh-and-its-raw/