01 - Preheat oven to 375°F.
02 - In a medium bowl, combine softened cream cheese, half of the mozzarella, and half of the Parmesan until smooth.
03 - Spread the cheese mixture evenly into the bottom of a small ovenproof baking dish (8-inch round or similar size).
04 - Pour pizza sauce evenly over the cheese layer.
05 - Sprinkle with the remaining mozzarella and Parmesan cheese.
06 - Arrange beef pepperoni slices over the top. Add diced bell pepper and olives if desired.
07 - Sprinkle with oregano, garlic powder, and red pepper flakes.
08 - Bake for 18 to 20 minutes, or until cheese is melted, bubbly, and slightly golden at the edges.
09 - Let cool for 5 minutes. Garnish with fresh basil if desired.
10 - Serve warm with sliced baguette, breadsticks, or crackers for dipping.