Wilt spinach by adding to deep pan or pot, adding a splash of water and covering ot for around 3-5mins. When all of the spinach leaves have wilted, remove from pot and drain excess water.
Add wilted spinach, fresh basil, garlic, nutritional yeast, soaked cashews and non-dairy milk. Blend well until smooth.
Add salt and lemon juice, blend or stir in.
Add cooked paste to pot with a splash of olive oil. Stir sauce in pasta. Heat over a medium heat for around 5-8 minutes, stirring well.
Serve in bowls. Add optional toppings.