any pics of what exactly you're talking about?

what cabinet did you want to put it on?

(can you fill in the other 4.2 inches w/another piece of matching wood?)

So it looks like it’s more of a 2.75 inch gap which to the piece of trim at the back

The cabinets are being painted burnt red

The cabinet is 29" deep? That's a really deep cabinet. Not a traditional kitchen cabinet? Can you remove that horizontal piece of molding behind it... maybe that would help?

Is the dishwasher partially obstructing a doorway to the left? I'm confused as to why you'd place butcher block in one area and it's on top of a dishwasher instead of a food prep area. Can it be used in a different part of the kitchen like a small rolling island/cart?

Tlynn1960 the dishwasher is partially obstructing a doorway.

Mrs. S the back moulding would only buy me about 3/4”

how do you have 29" deep cabinets? standard depth is 24"

This is a kitchen?

lets see the whole thing

as for fixing that one piece, get another matching butcher block of that species, cut it and glue/clamp it on the piece you have. when dry, sand and finish.

Or, get a 2" piece of matching wood and make a backsplash out of it. 2'3" thick to fit that gap, and about 4-5" high

Beth H. Thanks for the idea. I’m thinking of getting a piece of maple and creating a little shelf at the back. Thanks for the photos. I could t find any when I looked.