Preheat oven to 350º F.
Mix pizza sauce, cream cheese, cheeses, and oregano in a bowl.
Transfer mixture to oven-safe dish and bake in oven for 20-25 minutes, until melted and bubbly.
While dip is baking, hollow out an Italian or Sourdough Bread Bowl and set bread aside for dipping.
Once dip is baked, transfer to bread bowl and top with remaining 1/2 cup of mozzarella and a small sprinkle of oregano (for garnish).
Bake in bread bowl another 5-7 minutes or until melted, then remove from oven.
Surround bread bowl with your bread chunks and serve warm!