In a large bowl, stir together the flour, salt and yeast. Stir in the olive oil and warm water. Form a Dough. Turn out onto a floured surface and knead for 5 mins until smooth and stretchy
Split the dough in 2
Place each in a separate oiled or lined bowl, cover with cling film, set aside to rise for 1 hour, until doubled in size
After 1 hour, turn out each dough on to a lined floured baking sheet. Pat down with flour. Push half an onion into the centre of each one
Melt the 2 tbsp of butter, stir in the honey and 1/2 tsp of salt. Brush some of the mixture over each loaf, including the onion.
Sprinkle with sea salt, black pepper & sesame seeds. Set aside to rise for a further 30 minutes
Preheat the oven to 170°c
Brush once more with the butter honey mix and Pop in the bottom of the oven for 30 minutes.*For a crispier crust, place a metal tray a third full with water at the bottom of the oven.
Allow to cool
Make a garlic butter- Mix softened butter, a crushed garlic clove & 1 tbsp of chopped parsley together
Slice the bread around the onion ( see video), stuff each gap with garlic butter and grated mozzarella cheese (see video)
Cover with tinfoil, bake at 170°c for 15 - 20 minutes, until the cheese has melted
Serve while still warm