Linguine with Creamy Arugula Walnut Pesto

Bahan-bahan (4 porsi)

• 16 oz linguine
• 1 cup walnuts
• 3 cups baby arugula
• 1 clove garlic, (roughly chopped)
• ½ cup grated pecorino Romano cheese
• ½ cup grated Parmigiano Reggiano cheese
• ¼ teaspoon salt
• ½ teaspoon freshly ground black pepper
• ¼ cup extra-virgin olive oil
• ½ cup heavy cream