Marshmallow eyeballs make a fun treat for Halloween next week. They are super easy to make as there is no cooking involved. I made a whole load while watching TV! Ingredients 1 packet of Marshmallows 1 packet of Maltesers Red and green writing icing Method 1. Use a chopstick to make a hole in the marshmallow. 2. Widen the hole with your fingers and add in a malteser. 3. Ice a dot in the middle of the malteser for the eye's iris and use red icing on the marshmallows to look like veins. It really is that easy!