01 - Combine bread flour, sourdough starter, water, and salt in a large bowl. Mix until a shaggy dough forms. Cover and let rest for 30 minutes to hydrate.
02 - Perform 2-3 sets of stretch and folds over 1.5 hours, allowing 30 minutes of rest between each set. After the final fold, cover and refrigerate overnight for 8-12 hours to develop flavor and structure.
03 - Generously coat a 9x13-inch baking pan with olive oil. Transfer the chilled dough to the pan, gently stretching to fit. Cover and let rise at room temperature for 2-3 hours until noticeably puffy.
04 - Beat cream cheese, sugar, egg yolk, vanilla extract, and lemon zest in a medium bowl until completely smooth and creamy. Set aside until ready to use.
05 - Toss fresh raspberries with granulated sugar and lemon juice in a small bowl. Let sit to release some juices while dough completes its rise.
06 - Preheat oven to 425°F.
07 - Use oiled fingers to create deep dimples across the surface of the risen dough. Drop dollops of the cheesecake mixture evenly over the top, then gently swirl with a knife or spatula to distribute. Scatter raspberries and their accumulated juices across the dough.
08 - Drizzle additional olive oil over the surface. Bake for 25-30 minutes until golden brown, set in the center, and edges are crisp and caramelized.
09 - Allow to cool for at least 30 minutes before slicing. Serve warm or at room temperature for best texture and flavor.