Place a small saucepan over medium/low heat. Chop the coconut butter into small pieces and place in the pan. Allow to melt, stirring constantly. The coconut butter will start to brown rather quickly. Keep stirring until the coconut butter is the colour of caramel and super fragrant. Remove from the heat.
Straight away, while the coconut butter is still hot, add the coconut oil to the pan. Stir until the coconut oil is completely melted, placing back over a low flame if necessary.
Pour the coconut butter and oil mixture into the cup of a high speed blender along with all the remaining ingredients and blend on high speed until smooth. Turn off the blender, scrape down the sides with a spatula and run the blender again to ensure there are no lumps.
Pour over the set chocolate cheesecake layer. Tap the sheet tin on a work surface to get rid of any surface bubbles on the top layer. Place in the freezer until the cheesecake is completely set (around 5 hours or overnight)
Remove the cheesecake from the freezer and carefully lift out of the tin using the baking parchment (you may need to loosen the sides with a knife first). Place on a chopping board.
Leave the cheesecake to sit for 5-10 mins at room temperature before slicing. Using your sharpest knife, divide the cheesecake in half down its length, so you are left with two long thin strips of cheesecake.
Using a ruler or tape measure, measure 5cm increments along the side of each strip of cheesecake. Slice the cheesecake either into triangular "slice" shapes or into simple rectangles. To make life easier, you can heat your knife before slicing over the stove flame or in a cup of boiling water.
Insert a sharp, bamboo skewer into each slice of cheesecake.
Return the slices of cheesecake to the tin, making sure it's still lined with greaseproof paper) and place in the freezer to firm up fully again (around 30 minutes).