Bring a large pot of water to a boil. Add a generous amount of salt and add pasta. Boil pasta until al dente.
While the pasta is cooking heat a large skillet with the olive oil over medium to medium low heat. Add garlic and stir constantly to prevent burning. Cook the garlic just until golden. Stir in the red pepper flakes and remove from heat.
Once the pasta is done cooking transfer to the skillet along with at least ½ cup of the pasta water. Toss to combine. If desired add the parsley and cheese and toss lightly to combine. Serve immediately.
Nutrition is calculated using the parsley and parmesan cheese.