01 - Prepare a brain-shaped mold, or line a medium bowl with plastic wrap to create a brain shape.
02 - In a large saucepan over medium heat, melt the butter. Add the mini marshmallows and stir until completely melted.
03 - Tint the marshmallow mixture with a few drops of red or pink food coloring until a brain-like hue is achieved.
04 - Remove from heat and stir in the crispy rice cereal, mixing until evenly coated. Allow to cool just enough to handle.
05 - With buttered hands, press half the cereal mixture into the mold, pressing up along the sides to form a cavity in the middle.
06 - Spoon the jam and coulis into the cavity, keeping it centered. Gently cover with the remaining cereal mixture, sealing the filling inside.
07 - Press and shape the cereal gently to enhance the brain-like appearance. Let set at room temperature for 20–30 minutes.
08 - Unmold carefully onto a serving plate. Optionally, use food coloring and a small brush to add detailed brain cell ridges or highlight lines. Add candy eyes or sprinkles for extra spookiness.
09 - Slice and watch the berry filling ooze out for a delightfully spooky presentation.