Ingredients

• 2 small carrots , roughly chopped
• 1 stalk celery , roughly chopped
• 1 onion , roughly chopped
• 2 cloves garlic , roughly chopped
• 2 tablespoons olive oil
• 1/2 cup finely chopped walnuts
• 1 tablespoon tomato paste
• 2 teaspoons dried oregano
• 1 teaspoon ground cumin
• 1 pinch hot pepper flakes
• 3 cups strained tomatoes (passata)
• 2 cups vegetable broth
• 1 can lentils , rinsed and drained
• salt and pepper