Somehow that reminds me of an Alfred Hitchcock Presents episode, where a lady clubs her husband to death with a pot roast. Then she puts it in the oven and cooks it, and calls the police to report finding her husband dead (in that order). The police arrive, and after an hour or so of examining the crime scene, she graciously offers them a good dinner, and they, the police, eat the murder weapon!
I think it was the single best episode of the series.
