Cook pasta: Bring a large pot of water to a boil. Add salt and the pasta. Cook according to the packet's instructions.1 lb pasta/ 500 g
Make sauce: While the pasta cooks, make the garlic butter sauce.
Melt butter: Place the cubed butter in a small saucepan. Melt slowly, stirring often. Let it simmer for about 3 minutes.3 oz butter/ 90 g
In the meantime, grate the Parmesan.¾ cup freshly grated Parmesan/ 115 g
Cook garlic: Grate the garlic. Add it to the butter and let cook for about 2 minutes while stirring very often. The garlic should get golden. Keep an eye on it; it should not get too dark.6 garlic cloves
Add the salt. Start with 1 teaspoon and add more after mixing the noodles with the butter sauce. You will probably need some more if you use unsalted butter.
Add pepper and some chili flakes to taste.½ teaspoon chili flakes
Stir well, the butter should start to get a little frothy and rather brown by now. Remove from the heat.
Combine: Drain the noodles and mix them immediately with the garlic butter sauce. Add the grated Parmesan to the noodles as well.
Adjust the taste with more salt and pepper, if necessary. Sprinkle with some chopped parsley, if desired, and serve immediately with a green salad.
Notes
Butter: Either salted or unsalted butter, adjust the salt amount you use for the garlic butter sauce accordingly.