Christmas tree garlic bread

Name: Christmas tree garlic bread
Ingredients: 500g strong white bread flour; 7g sachet fast-action dried yeast; 2 tsp golden caster sugar; 100g butter melted (buy a 250g pack and use the rest in the garlic butter); drizzle of oil for greasing; 2 tbsp fine polenta or cornmeal; 150g pack mozzarella (about 20 balls); small knob of butter; 1 garlic clove crushed; 2 x 400g cans chopped tomatoes; 1 tsp dried oregano; 1 tbsp red wine vinegar; 140g butter; 4 garlic cloves crushed; small bunch parsley finely chopped (leave a little leftover to garnish, if you like)