I cut up the vegetables nice and small, so the kids couldn't see them in the food.
I dice up all the veggies and hide them in whatever I'm cooking, so the kids don't even know they're eating them.
ーI cut up the vegetables nice and small, so the kids couldn't see them in the food.
「子供たちが料理の中の野菜が見えないように、小さく切っています」
小さく切ることは to cut up ... nice and small のように言えます。
ーI dice up all the veggies and hide them in whatever I'm cooking, so the kids don't even know they're eating them.
「子供たちが野菜を食べているのに気がつかないよう、料理をするときは野菜を刻んで隠します」
to dice up ... で「…を刻む」と言えます。
ご参考まで！
カナダ 
