What's That Title???? discussion

Story about a family on a farm or rural area that in the end they disappear and the supper is left on the table. I cannot remember the title of this book and need help.

Thanks

hey M.
Is this a children's, teen, or adult book? How long ago did you read it (is a few years ago? decades ago?) Do you remember if the disappearance was eerie/mystery/thriller like or if it was more humorous/lighthearted/fairy-tale like?