Use the starchy pasta water as your secret ingredient; it is the essential binder that converts oil and garlic into a luxurious silk sauce. Slice your garlic as thinly and evenly as possible to ensure that every morsel cooks at the same speed, preventing bitter burnt garlic pieces. Cook the zucchini at a slightly higher heat for the final minute if you prefer a charred, nutty flavor profile in your, adding complexity to the Spaghetti Aglio Olio With Zucchini recipe. Adjust the heat of your Spaghetti Aglio Olio With Zucchini recipe by adding more chili flakes or a small squeeze of lemon for a brighter finish. Always use a large enough skillet to allow for vigorous tossing, which promotes the emulsification process required for a restaurant-quality Spaghetti Aglio Olio With Zucchini recipe.