Mixed berry cereal with marshmallows

oat flour 51.5% , sugar 15.6% , DEGERMINATED YELLOW CORN FLOUR 15.6% , rice flour 8.6% , oat fibre 4.3% , contains 2% and less of corn syrup 2.2% , modified corn starch 1.1% , dextrose 0.5% , salt 0.3% , natural and artificial flavouring 0.1% , E500ii 0.1% , E428 0.0% , E129 0.0% , E102 0.0% , E133 0.0% , E110 0.0% , bht for freshness 0.0% , wheat flour 0.0% , vitamins 0.0% , Minerals 0.0% , E375 0.0% , reduced iron 0.0% , zinc oxide 0.0% , vitamin B6 0.0% , vitamins 0.0% , E101 0.0% , E101 0.0% , retinyl palmitate 0.0% , vitamins 0.0% , thiamin 0.0% , thiamin hydrochloride 0.0% , folic acid 0.0% , vitamin B12 0.0% , Cholecalciferol 0.0%