01 - Line a medium bowl with plastic wrap to create a brain-shaped mold, or use a brain-shaped silicone mold if available.
02 - In a large saucepan over medium heat, melt the butter. Add the mini marshmallows and stir constantly until completely melted and smooth.
03 - Add a few drops of red or pink food coloring to achieve a brain-like hue. Mix thoroughly until the color is evenly distributed throughout the marshmallow mixture.
04 - Remove from heat and stir in the crispy rice cereal, mixing until evenly coated. Allow to cool for 2-3 minutes until safe to handle.
05 - Lightly butter your hands. Press half the cereal mixture into the prepared mold, pressing up along the sides to create a hollow cavity in the center.
06 - Spoon the jam and optional coulis into the cavity, keeping it centered. Avoid overfilling to prevent leakage during sealing.
07 - Gently cover with the remaining cereal mixture, pressing edges together to seal the filling inside. Shape the exterior to enhance brain-like ridges and contours.
08 - Let set at room temperature for 20-30 minutes until firm. Carefully unmold onto a serving plate by inverting and removing the plastic wrap.
09 - Use food coloring and a small brush to add detailed ridges or highlight lines. Add candy eyes or sprinkles for extra spooky effect. Slice to reveal the oozing berry filling.