Preheat the oven to 180/350/gas 4
Slice the loaf in inch wide sections, almost to the base.
Turn the loaf and slice in inch wide sections to create a checkerboard.
Mix together the butter and garlic well, then spread in between each slice you made in the loaf. You may not need all the butter, any leftovers can be kept in the fridge for a few days and used in cooking.
Wrap the entire loaf tightly in aluminum foil, and bake for 20 minutes.
Unwrap the top of the foil and pop back in the oven for 10 minutes, or until the butter has fully melted and the loaf looks (and smells!) tremendous.