Ayam Pesto

Bahan-bahan (6 porsi)

• 2 ½ pounds boneless skinless chicken breast (pounded to ¾-inch thickness)
• 1 tablespoon olive oil
• salt and pepper to taste
• ½ cup extra-virgin olive oil
• ½ teaspoon kosher salt
• ¼ teaspoon black pepper
• 1 cup packed basil
• 1 cup packed baby spinach
• 3 cloves unpeeled garlic
• ¼ cup walnuts (plus more for garnish)
• ¼ cup grated parmesan cheese (plus more for garnish)
• 1 cup diced tomatoes