Step 1

Cook spaghetti in salted boiling water until al dente.

Step 2

Reserve 1 cup of pasta water before draining.

Step 3

Heat olive oil in a large skillet over medium-low heat.

Step 4

Add sliced garlic and red pepper flakes; cook until garlic is golden.

Step 5

Add drained pasta to the skillet.

Step 6

Toss with pasta water as needed to create a silky sauce.

Step 7

Add parsley and toss to combine.

Step 8

Serve with grated Parmesan.