Food & Cooking Recipes Recipes by Region Italian Recipes Leftover-Herb Pesto 4.1 (7) Prep Time: 5 mins Total Time: 5 mins Yield: Makes 3/4 cup Think beyond basil: Pesto is a great way to use leftover herbs. Directions Pulse garlic, nuts, herbs, oil, and Parmesan in a food processor until finely chopped. Season with salt and pepper. Cook's Notes Pesto can be made up to 2 days ahead and stored in refrigerator.