Baked meatball sub recipe

Ingredients

• 400 g good-quality minced beef
• 1 spring onion, very finely chopped
• 2 cloves of garlic, crushed
• 1 tbsp freshly grated Parmesan, plus extra to serve
• 2 tbsp fresh breadcrumbs
• 1 egg, beaten
• 2 sprigs of fresh basil, leaves from 1 sprig finely chopped
• 1/2 tsp salt
• 200 ml passata
• 1 splash of olive oil
• 1 pinch dried red chilli flakes (optional)
• 1 pinch each of salt and freshly ground black pepper
• 4 sub rolls (or any kind of long, sturdy roll or baguette), split open and warmed, to serve