HELP: One page, the sun is made of butter, hauled in wheelbarrows?

I can only remember a single page from this book, or at least it was one paragraph and an illustration.

The text stated that when the sun sets, it falls on the ground behind a hill and men come and men come and haul away pieces in wheel barrows and that is where butter comes from.

The picture was a black and white old style illustration of men cutting up the sun, which was not very large, with shovels, and walking away with the wheelbarrows

Desperate to find this. Everyone thinks I dreamt it.

Thanks