Here are some awesome tips for pesto that I learned from Marcella Hazan’s Essentials of Classic Italian Cooking. These tips are especially useful for pre-made, frozen pesto, which you may be trotting out this time of year.
First, stir in a couple of spoonfuls of pasta cooking water. This helps loosen up your pesto and makes it adhere better to the pasta.
Second, add a pat or two of softened butter. Heaven!