1. Cook fusilli as per the packet instructions.
2. In a blender, add walnut and garlic.  Pulse it 2 to 3 times so that the walnut and garlic break down into a coarse mixture. 
3. Add olive oil, lemon juice, basil leaves, spinach, salt and pepper to the blender.  Blend it to make a paste.
4. In a bowl, combine grated cheddar cheese, prepared pesto and cooked fusilli.  Toss very well. 
5. Dish out in a serving bowl, top it with some more grated cheese and serve warm.

Enjoy your meal!