Bring a pot of water to the boil. Add salt and cook the spaghetti according to pkt instructions (about 10 minutes). Drain and set aside.
Slice the chili (de-seed) if preferred. Slice the garlic.
Rinse the basil leaves and then blanch them in boiling water for a minute. Remove and place them in an ice bath to cool down. Squeeze the water out using a clean kitchen cloth.
Add the basil leaves into a blender or food processor with some olive oil and salt and puree.
Add the oil into a non stick frying pan with the sliced garlic and bring to the heat. Once hot add the sliced chili and cooked spaghetti. Mix well and finally add the basil puree and cheese.