Spaghetti Bolognese | Australian Onions

Ingredients

• 2 tbsp olive oil
• 1 brown onion, finely chopped
• 2 garlic cloves, crushed
• 2 tbsp tomato paste
• 400 g button mushrooms
• 400 g beef mince
• 800 g can diced tomatoes
• ½ cup basil leaves, shredded
• 500 g spaghetti
• Finely grated parmesan & basil leaves, to serve