Cook pasta 2-3 minutes less than the packet directions. Strain and set aside.
Add all ingredients for the cashew cheese into a high-powered blender and blend until smooth. Pour into a small bowl and set aside.
Grease an 8-inch/20cm cake tin. Put a tray under in case the tomato sauce seeps through the tin during cooking.
Pour about 100g pasta sauce from one jar into the tin to cover the bottom. Fill cake tin with about half of the cooked pasta.
Add remaining 400g pasta sauce from the opened jar and pour about a quarter of your cashew cheese over the top. Add remaining pasta and pour contents of the second jar of sauce on top. Add remaining cashew cheese ensuring it is evenly spread over the top.
Place tin on tray in the oven and cook for around 20 minutes. Then, remove from oven and let stand to set for 10-15 minutes. Cut into slices and serve with rocket or kale.