In the meantime, heat the butter and sweat the diced garlic cloves in it, be careful not to let it brown, it will taste bitter. Sweat the finely chopped rosemary needles as well. Salt. Mix with the cooked and drained spaghetti and stir in the finely grated cheese. Finished.
This is a very simple dish, but it tastes great.
The interplay of parmesan / or pecorino with rosemary and garlic makes it. A must for rosemary fans who want to cook something quick.