Smoky lentil carbonara

(~ 7 1/2 oz) spaghetti

creme fraiche

gruyere cheese ((or vegetarian parmesan-style cheese), finely grated (~ 1 cup when grated))

large pieces sun-dried tomato, (finely chopped)

(~ 3/4 cup) cooked puy lentils

smoked paprika

Salt

Black pepper

water ((you can use the pasta cooking water))

Fresh basil, (chopped, to serve (optional))