Place the soft unsalted butter into a mixing bowl and add the grated/minced garlic cloves.
Add the parsley and thyme and mix again until totally combined.
Using a sharp bread knife slice every inch or so along the bread. Only cut 75-80% through as this will help keep it together and cooking without falling apart.
Using a blunt knife, spread the butter between the bread on both sides. with a little spread over the top for extra crispiness.
Slice the mozzarella and grate the cheddar.
Put some of both cheeses in between the slices.
Tear a piece of aluminium foil and wrap the bread up tightly.
Place on a baking tray in the preheated oven for 15 - 20 minutes.
If you like the bread crispy, open the foil and place in the oven for a few more minutes.