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.
02 - Perform 2 to 3 sets of stretch and folds over 1.5 hours, resting 30 minutes between each set. After the final fold, cover and refrigerate dough overnight for 8 to 12 hours.
03 - Generously oil a 9x13-inch baking pan. Transfer chilled dough to pan, stretching gently to fit. Cover and let rise at room temperature for 2 to 3 hours until very puffy.
04 - Beat cream cheese, sugar, egg yolk, vanilla, and lemon zest in a medium bowl until smooth and creamy. Set aside.
05 - Toss fresh raspberries with sugar and lemon juice in a small bowl. Let sit to release juices.
06 - Preheat oven to 425°F.
07 - Dimple the risen dough generously with oiled fingers. Dollop cheesecake mixture evenly over surface and gently swirl with knife or spatula. Scatter raspberries and their juices over dough. Drizzle with additional olive oil.
08 - Bake for 25 to 30 minutes until golden brown, set in center, and edges are crisp.
09 - Let cool in pan for at least 30 minutes before slicing. Serve warm or at room temperature.