Garlic oil, parsley and red pepper flakes enliven this pasta side dish. Add a sauteed vegetable, if you like.
In a large pot of boiling salted water, cook spaghetti until al dente, according to package instructions. Reserve cup pasta water. Drain pasta and set aside.
In pasta pot, heat oil, garlic, and red-pepper flakes over medium until garlic has begun to brown, about 2 minutes. Add reserved pasta water, then spaghetti and parsley; season with salt. Toss to combine. Serve in bowls.