Apple and chestnut risotto

Name: Apple and chestnut risotto
Ingredients: 4-5 cups vegetable broth; 3 tablespoons butter plus 1 tbs for finish; 1/3 cup green onion, sliced (3 green onions ); 1 cup arborio rice; 1/2 cup white wine; 3/4 cup peeled roasted chestnuts, chopped ( 100 g ); 1 apple, diced ( 1 1/2 cup ); 1 tablespoon lemon juice for apples; 1 teaspoon fresh thyme; 1 tablespoon chopped fresh basil; 1/4 cup freshly grated Grana Padano cheese; 2 tablespoons fresh flat leaves parsley, chopped; sea salt and freshly ground black pepper