The term might not work in AmE - we'll have to wait for AmE input on this.
At Chef on Board we make a delicious range of handmade frozen ready meals, using great quality local meat and free-range Herefordshire chicken.
Unfortunately, your English is not idiomatic, and thus your question is ambiguous.Can I refer to some food that we can prepare by putting in the microwave?
This type of food is usually referred to by the method of preservation:For instance some prepared pizzas, prepared soups and...?
Unfortunately, your English is not idiomatic, and thus your question is ambiguous.
I can buy meals that are pre-prepared. These meals have usually (but not always) gone through some sort of cooking process and are sold in plastic or aluminium containers. They are either fresh (to be sold within, say 8 hours of being made) chilled (to prevent decay, and saleable for about 3 days) or frozen (to prevent decay, and saleable for about 3 months). In all cases, the purchaser "prepares" them by re-heating them.
Fresh, chilled and frozen food in plastic containers can be reheated in a microwave or a standard oven; food in aluminium containers can only be re-heated in the oven.
This type of food is usually referred to by the method of preservation:
As a generic term, as natkretep says, in BE these are called "ready meals" by the customers and, more broadly, as "convenience foods" - again they can be (but not always are) divided into "frozen, chilled and fresh".