Prepare a Bain-Marie by adding ½ cup of water to a small pot and bringing it to a gentle boil. Place a large heatproof bowl over the pot.

Add butter and marshmallows to the bowl. Stir continuously until a smooth, thick paste forms (about 2–4 minutes).

Carefully remove the bowl from the pot. Add salt and a few drops of red food colouring. Whisk until the mixture turns evenly red.

In a large mixing bowl, pour the Rice Bubbles. Add the melted marshmallow mixture and stir until fully coated.

Lightly oil your hands, then shape the mixture into oval “brains.” Use a butter knife to create a line in the centre.

Dip a toothpick in food colouring and draw small veins for a realistic look.

Let the treats cool for 15 minutes, then store them in an airtight container for up to one week.