准时做饭英语怎么说

"Cook on time" 或 "Cook punctually" 可以用来表示 "准时做饭" 的意思。
来源： "Cook" 是做饭的意思， "on time" 或 "punctually" 意思是按时，故结合在一起表示准时做饭。
例句：
Please make sure to cook on time for the dinner party tonight.
(请确保今晚的晚餐会准时做饭)
It's important to cook punctually so that the food is ready at the right time.
(准时做饭很重要，这样食物才能在正确的时间准备好)