Place a small saucepan on a set of scales and add the honey, tahini, coconut oil and vanilla. Taring as you go. This avoids mess and greater accuracy.
Place the saucepan on low heat and stir until it becomes runny and the coconut oil has melted. Add a pinch of salt and vanilla and remove from the heat.
Combine the remaining ingredients in a large bowl and pour in the contents of the saucepan. Stir well to combine.
Line a tin, I used a 24cm square tin. with baking paper. Using damp hands, press the slice into the tin evenly. Set in the fridge for about an hour.
Slice into even pieces of your desired size and store in the fridge or freezer in an airtight container.