Spaghetti lentil bolognese

Ingredients

• 2 tablespoon olive oil
• 1 large onion, finely chopped
• 2 garlic cloves, crushed
• 2 tablespoon fresh basil, coarsely chopped
• 1 teaspoon dried oregano leaves
• 400 gram can diced tomatoes
• 400 gram can tomato purée
• 400 gram can brown lentils, drained, rinsed
• 400 gram spaghetti
• 25 gram finely grated pecorino cheese
• 2 tablespoon basil leaves, plus extra to serve