Late summer veggie planting?

Late summer veggie planting?

So... I don't think I'm going to plant any lettuce next year. It just explodes and I can't eat it fast enough, or enough of it, so it begins flowering. I've ripped out all of the current flowering lettuce plants which, naturally, has left me with a huge gaping hole in my little vegetable garden. It's August and I live in zone 4 (Minnesota). Is there ANYTHING I can plant there at this time of the year that might still pop up around fall? It would be nice...
Picture entry

Picture entry

Garden Pic spam – not for the fainthearted or those with dial up…

Garden Pic spam – not for the fainthearted or those with dial up…

It’s Spring – Yea!

It’s Spring – Yea!

The room of Baerana and Nibbler

The room of Baerana and Nibbler

Oh no…are these aphids?

Oh no…are these aphids?

Happy Thanksgiving

Happy Thanksgiving