From Longman Dictionary of Contemporary Englishburnt offeringburnt offeringa) RRsomething that is offered as a gift to a god by being burnt on an altar b) British English humorousFOOD food that you accidentally burnt while you were cooking it → burnt
Examples from the Corpus
burnt offering• I've no wish to see the hungry rafters sitting down to plates of burnt offerings.• We must sacrifice the most valued possession among us and make it a burnt offering. 