Spinach Pesto Pasta Recipe from Jessica Seinfeld - Jessica Seinfeld

Ingredients

• 5 tablespoons extra virgin olive oil
• 1 yellow onion, finely chopped
• 1¼ teaspoons kosher salt
• 2 cloves garlic, finely chopped
• ¼ teaspoon crushed red pepper flakes
• 1 cup fresh basil leaves, plus 1 sprig basil
• 1 pound short pasta, such as gemelli or cavatappi
• 8 cups (5 ounces) fresh baby spinach
• ¼ cup pine nuts
• ¼ teaspoon freshly ground black pepper, plus more for serving
• 2 tablespoons nutritional yeast or ½ cup grated Parmesan (if you don’t want vegan)