Cook the spaghetti according to the instructions on the packet. Drain but keep back 50mls/4tbsp of the water used to cook the spaghetti in.
Add the Greek Philadelphia, garlic granules, lemon zest, chilli flakes and the water from the spaghetti into a saucepan. Mix on a low heat until combined.
Take the saucepan off the heat and add half of the smoked salmon.
Combine the mixture with the spaghetti and serve.
Top each serving with the rest of the smoked salmon. Add some freshly ground black pepper, a small grate of lemon zest and, if to taste, a sprinkle of spring onion tops.