A simple combination of garlic and oil make a tasty topping for this pasta. To make it: heat 6 tablespoons olive oil in a large skillet. Add 6 very thinly sliced garlic cloves and cook, stirring occasionally, until golden brown, 1 to 2 minutes. Remove from the heat and add 1/2 teaspoon red pepper flakes. Toss with pasta, 3/4 cup pasta-cooking water and 1/2 cup chopped parsley.