Classic Basil Pesto Sauce Recipe

This bright green pesto sauce comes together quickly in a food processor, blending fresh basil with pungent garlic, nutty pine nuts, and a mix of Parmesan and Romano cheeses. A slow stream of olive oil emulsifies everything into a smooth or slightly chunky sauce, depending on how you like it. It's especially good tossed with hot pasta, where a little cream or pasta water helps it coat every strand. This recipe makes one serving, but it doubles easily.