Strawberry frosted chocolate cupcakes with strawberry filling

cake 51.1% , CANOLA 24.4% , soya oil 12.2% , egg 6.1% , fortified wheat flour 3.1% , water 1.5% , cocoa powder processed with alkali 0.8% , modified corn starch 0.4% , whey powder 0.2% , Raising agent 0.1% , soya lecithin 0.0% , wheat gluten 0.0% , salt 0.0% , DIACETYL TARTARIC ACID ESTERS OF mono- and DIGLYCERIDES 0.0% , artificial flavouring 0.0% , icing 0.0% , fat 0.0% , water 0.0% , strawberry compound 0.0% , invert sugar 0.0% , glucose 0.0% , butter 0.0% , skimmed milk powder 0.0% , E471 0.0% , modified corn starch 0.0% , salt 0.0% , concentrated lemon juice 0.0% , E129 0.0% , E435 0.0% , filling 0.0% , glucose 0.0% , sugar 0.0% , strawberry 0.0% , modified corn starch 0.0% , natural flavouring 0.0% , E330 0.0% , dextrose 0.0% , E440a 0.0% , Colour 0.0% , sprinkles 0.0% , E129 0.0% , E127 0.0% , confectioner's glaze 0.0% , E903 0.0%