This Pesto Mac & Cheese is a herby, creamy fusion of classic comfort and fresh flavor. Butter, garlic, and pesto form the base of a luscious sauce that’s enriched with heavy cream and layered with three cheeses—cheddar, mozzarella, and Parmesan. Finished with a splash of pasta water for the perfect texture and topped with more Parmesan, this dish is quick, easy, and loaded with cheesy basil goodness.