Position a rack in the center of the oven and preheat the oven to 375ºF. Line a baking sheet with a large piece of tinfoil.

Place the bread on a cutting board and cut the top into 1” inch squares to form a criss-cross pattern. Don’t cut all the way through the bread.

Heat the butter in a saucepan over medium heat until melted. Add the garlic and salt and cook for an additional 30 seconds, until fragrant.

Remove the butter from the heat and pour it evenly into all the cuts of the bread. Mix the cheeses together and pack it into all the cuts of bread. 

Place the bread on the tin foil and wrap it into a package. Use another piece of foil to cover the top, if necessary.

Bake for 15 minutes, then remove the top piece of foil, or open the packet. Bake an additional 5 minutes, until cheese is melted and golden on top.

Sprinkle with parsley and serve warm.