Hearty meatballs with sundried tomato sauce

Ingredients

• 1 onion, peeled and finely diced
• 1 tablespoon sundried tomato oil
• 2 cloves garlic, peeled
• 400g tin tomatoes
• 200ml water
• 6 sundried tomatoes, sliced
• 1 teaspoon vegetable bouillon
• Salt
• pepper
• 1kg beef mince
• 1 red onion, peeled and finely diced
• 1 teaspoon Dijon mustard
• 1 teaspoon tomato puree
• 1/2 teaspoon Worcestershire sauce
• 2 sprigs basil (leaves and stalks), chopped
• 1 large handful parsley (leaves and stalks), chopped
• 1 tablespoon rapeseed oil for frying
• 100g cheddar, grated on the large grate