From Longman Dictionary of Contemporary Englishoven-readyˌoven-ˈready adjective British English DFFoven-ready food is already prepared when you buy it, so you only have to cook it a five-pound oven-ready turkey
Examples from the Corpus
oven-ready• I wonder, however, if they are beginning to have suspicions about our parking-lot creeds and oven-ready ideas.• Lasagne - most suppliers mentioned that the oven-ready varieties are most popular. 