Cook the pasta: Bring a large pot of water to a boil. Add 1 tablespoon kosher salt to the water. Cook 12 ounces of bucatini until al dente according to package instructions. Reserve 1/2 cup pasta water before draining the pasta.
Infuse the olive oil: In a large skillet, heat 1/4 cup extra virgin olive oil over medium heat. Add 6 thinly sliced garlic cloves and cook gently, stirring often, until golden and fragrant (about 2–3 minutes). Be careful not to burn the garlic. Stir in 1/2 teaspoon red pepper flakes and cook for 30 seconds to infuse the oil.
Combine pasta and sauce: Add the drained bucatini to the skillet with the garlic oil. Pour in reserved pasta water, a splash at a time, and toss to coat the pasta until the sauce is silky and clings to the noodles. Add 1/4 teaspoon kosher salt and 1/4 teaspoon freshly cracked black pepper. Toss well to combine. Taste and adjust seasoning if needed.
Finish and garnish: Stir in 2 tablespoons fresh parsley, then toss one final time. Serve immediately, garnished with freshly grated Parmesan cheese, if desired.
Notes
Low and slow: Don’t rush the garlic—it should turn golden brown, not burnt, for a perfectly infused oil.
Pasta water: Reserve the pasta water before draining; it’s the key to making the sauce silky and luxurious.
Toss: Toss the pasta vigorously in the skillet to ensure every strand is evenly coated.
Adjust: Taste and adjust the seasoning at the end—pasta needs to be seasoned well to shine!