Melt the fresh butter and then graually mix in the other Garlic Butter ingredients.
Carefully cut the bread on a straight diagonal into a 2cm/1" diamonds however do not cut right through the bread
Using your fingers or knife pry open each cut and then drizzle in a teaspoon of the butter and then stuff in a good sized pinch of the cheese. This may sound a bit like alot of effort, however I do promise you that it is well worth it! You do not need to be neat, it's really nice to have a little of the butter actually drizzled all over the crust.
Wrap in foil and then bake for about 15minutes until the mozzarella cheese has for the most part mostly melted, then unwrap and proceed to bake for about 5 minutes more to make the sourdough bread nice and crusty.
Serve immediately.
Recipe by Appetizer Girl at https://appetizergirl.com/appetizer/cheese-and-garlic-pull-apart-bread/