The crossword presented in the New York Times provides the answer to the question in the form of the packed lunch as BENTO or BENTO BOX. A prominent example of a puzzle with spoonerisms in 2025 had the answer of FELL FLAT (a pun of Packed lunch becoming Lacked punch).
The answer to the NYT crossword clue “packed lunch” is “bento.” A bento is a Japanese-style boxed meal, neatly packed with portions of rice, vegetables, and proteins. It fits well with the clue’s idea of a compact, prepared lunch.