01 -
Preheat oven to 375°F (190°C).
02 -
Cut the sourdough loaf into 1-inch cubes, ensuring not to slice all the way through so the bottom remains intact.
03 -
Combine melted butter, minced garlic, chopped parsley, salt, and black pepper in a bowl.
04 -
Drizzle the garlic butter mixture into the crevices of the bread. Stuff the shredded mozzarella and sharp cheddar cheeses generously into the cuts.
05 -
Wrap the prepared loaf in foil and bake for 15 minutes. Unwrap and continue baking for an additional 10–15 minutes until the cheese is melted, bubbly, and golden.
06 -
Sprinkle Parmesan cheese and red pepper flakes on top as a finishing touch before serving.
07 -
Serve hot and enjoy pull-apart style.