convenience food

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A prepackaged food that can be prepared quickly and easily.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A food or meal that needs little preparation or cooking, especially one sold prepackaged.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any packaged dish or food that can be prepared quickly and easily as by thawing or heating