In an unheated pan, add oil and thinly sliced garlic cloves.
Next, turn the burner on to low to medium and let the oil bubble ever so gently for 10-15 minutes or until the garlic is golden brown.
While the olive oil and garlic are cooking, boil spaghetti per packet instructions in generously salted boiling water.
Once garlic has turned golden brown, lower the burner to the lowest setting and add red chilli pepper flakes and black pepper. (I have seen recipes not add black pepper and I think that is too bland for my taste.)
Next, turn the flame off and add pasta and coat it well in the sauce.
Next, add the parmesan cheese and continue tossing the pasta until the cheese has melted and the sauce is coating the pasta really well.
Garnish with chopped parsley and serve with some more parmesan!