Pour hot water onto cereal, mix and let soften for a minute, then add in the rest of the ingredients, stir to combine well.
Pour into ramekin/small cup/microwave proof mold lined with cupcake paper and cook for 2 1/4 minutes (for 6 muffins, for 4 muffins 2 minutes long, for 2 muffins 1 3/4 minutes, 1 muffin 1.15 minute)