01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - Slice the French baguette in half lengthwise. Carefully hollow out each half, creating a well for the filling, and reserve the removed bread for another use.
03 - In a mixing bowl, thoroughly combine ricotta, Parmesan, oregano, garlic powder, salt, black pepper, and chopped basil until smooth.
04 - Distribute the ricotta mixture evenly inside the hollowed bread halves.
05 - Spoon marinara or pizza sauce over the ricotta layer. Evenly sprinkle shredded mozzarella over the sauce. Top with olives, cherry tomatoes, and red pepper flakes if desired.
06 - Arrange the stuffed bread halves on the prepared baking sheet. Bake for 18–20 minutes, or until the mozzarella is bubbling and golden and the bread is crisp.
07 - Remove from oven, garnish with additional fresh basil, slice into pieces, and serve immediately while hot.