Little guessing required.

LITTLE!!??!

Clues please, this is impossible.

There is a capital B in the top right 4x5 square and a banana curves around it in the three other grids. I think the best way to do it is to use temps, for example beginning with the 5 at the bottom. Hope this helps.

Even with Ekkonic's hint, I still got two possible solutions. To add to his hint, the banana is more roundish.

It looks like a green pepper, not like a banana.

Mostly guesswork, using the clues in the comments.