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 - In a large mixing bowl, combine the cottage cheese, Greek yogurt, sugar, lemon zest, lemon juice, vanilla extract, and salt. Mix well until smooth and creamy. For the best texture, use an immersion blender to eliminate any lumps.
03 - Add the eggs one at a time, mixing thoroughly after each addition until fully incorporated and smooth.
04 - Sprinkle the cornstarch over the mixture and stir until completely dissolved and no dry spots remain.
05 - Gently fold in the fresh raspberries using a spatula, being careful not to crush them to maintain their shape.
06 - Transfer the batter to the prepared baking dish, spreading it evenly and smoothing the top with a spatula.
07 - Bake for 38-42 minutes, or until the center is set and the edges are lightly golden. The center should still have a slight jiggle but not be liquid.
08 - Allow the bake to cool to room temperature, then refrigerate for at least 2 hours to set completely before slicing.
09 - Serve cold or at room temperature, garnished with extra fresh raspberries and a light dusting of powdered sugar if desired.