01 - Preheat the oven to 350°F. Grease an 8-inch round or square baking dish and line with parchment paper if desired for easy removal.
02 - Combine the cottage cheese, Greek yogurt, sugar, lemon zest, lemon juice, vanilla extract, and salt in a large mixing bowl. Mix thoroughly until smooth, using an immersion blender for a creamier texture.
03 - Add the eggs one at a time, mixing well after each addition to ensure complete incorporation.
04 - Sprinkle the cornstarch into the mixture and stir until fully dissolved and no lumps remain.
05 - Gently fold in the fresh raspberries, taking care not to crush them.
06 - Pour the batter into the prepared baking dish and smooth the top with a spatula.
07 - Bake for 38 to 42 minutes, until the center is set and the edges are lightly golden brown.
08 - Let cool to room temperature, then refrigerate for at least 2 hours before slicing.
09 - Serve chilled or at room temperature, garnished with additional fresh raspberries and a dusting of powdered sugar if desired.