Mini Meatball Polenta Bake

Ingredients

• 750g minced beef
• 1 tsp origanum
• 1/2 cup regular breadcrumbs
• 1 egg, beaten
• Salt
• freshly ground black pepper
• Olive oil
• 2 Tbsp. fresh flat-leaf parsley, finely chopped
• 1 cup mozzarella, grated
• 1/2 cup parmesan, grated
• 1 cup panko breadcrumbs
• 2 onions, finely chopped
• 1 Tbsp. dried origanum
• 2 garlic cloves, crushed
• 2 Tbsp. tomato paste
• 2 Tbsp. balsamic vinegar
• 400g tinned chopped tomatoes
• 1 Tbsp. chipotle chilli paste
• 1 Tbsp. sugar
• 250ml beef stock
• 2 cups polenta (Italian maize meal)
• 6 cups chicken stock or water
• 1 cup milk
• 1/2 cup parmesan cheese, grated
• 4 Tbsp. butter