Here is a photo

Was the crown [part of the original plan?

I would think that you could use a simple moulding and it would look OK. An ornate moulding would be much more difficult to get right.

The other option would be to remove the cabinets on the left side (I assume that's the group around the refrigerator) and reinstall a half inch higher. You'd have to deal with the cap at the bottom, but that would probably be less noticeable. And the refrigerator would break it up visually.. I'm not sure how feasible that would be, though.

Drop about half way down this page to the"Full Stack" heading. This shows the method recommended and you actually slide the crown on the back up board to meet the ceiling. This is not a promotion of Scheers in any manner just trying to illustrate the method and this page does a good job.

IMO a very simple molding would be a good choice since honestly it will not be very noticable once done.

@millworkman I'm looking at the full stack heading and trying to imagine how that might work in our situation. If 'm understanding correctly the quarter round would all be at the same height all through your to look right ?putting it at the top of the section that's and 1.5", which would still leave a gap between the ceiling and quarter round in the spaces that are over 2" from the ceiling. If the quarter round is moved up to meet the ceiling in the 2" section it will be uneven at the bottom. Am I making sense trying to describe how my brain is perceiving this?!

Sorry for all the typos and auto corrections in my above post, it's early 🙃

Scribe a filler to the gap. Attach a very small inside corner molding at the ceiling.

I would have filler installed flush with the cabinet box ...

I had the same problem with the ceilings. My contractor ordered extra pieces of light rail, and installed them above the cabinets. Simple, and in keeping with Craftsman style.

Ah now looking closer your doors are probably too close the top of the box for that application.

@millworkman How about just a flat molding then?

Not a problem.

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It should be easy to use a flat molding cut to the size for each area.

Does no one hire a cabinet installer with enough skill for scribing anymore? It used to be standard. This is way extra from what needs to happen with a horizontal filler and the ceiling, but the principal is the same. https://www.jlconline.com/products-tools/power-tools/scribing-wood-to-stone_o

You don't scribe crown; that would look horrible.