PREHEAT oven to 375°F.
MAKE 1″ diagonal cuts through the bread, leaving the bottom crust intact. Turn the bread and make diagonal cuts in the opposite direction.
POUR the melted butter into the cuts of the bread. Using a spoon or butter knife, spread the pesto along the cuts, then stuff the shredded cheese into the cuts of the bread.
WRAP bread in aluminum foil and bake for 15 minutes. Then carefully open the foil and cook for another 10 minutes.
REMOVE from the oven and let cool slightly before serving.
