Since you are tearing down walls (big job) can you change that window? Make it not so low so a cabinet fits under it and move it further from the corner so your main back wall has clearance?

If you can't or don't want to do that, take a peek at altagirl's pictures of her shallow hutch. (altagirl I hope you don't mind that I post your link! It's a very good example of using a shallow space.) If you did something similar near the window, you'd have to hinge the end doors so they open away from the window (not a big deal) or be careful when opening that you don't hit the window.

I don't think you'd want to take away too much of your deep counter space on that back wall, but you could make a few feet at just the window end shallow. It will be easier to visualize when you post a layout.

HTH!

Here is a link that might be useful: altagirl's kitchen pics

Unfortunately, the wall with the low window is one of the only ones that needs to remain there. Plus, we re-sided before deciding to move around the kitchen layout. So, moving the window would be a huge hassle.

I do like the idea of a shallow hutch though. Do you think I would have to do the same on the other side just to give the back wall symmetry?
Thank you so much for the advice and link to pics!! Much appreciated!

I would try a mock up first with the shallow part only on the window side. That way you won't lose more cabinet room than you need to. And, if I'm understanding this right, won't the other end of that back wall meet the other wall of the L? (So you'll have cabinets running along that side?)

Once you can post a rough layout it will be clearer. But my personal preference would be to only go shallower where I had to and not worry so much about the symmetry. (Unless you have enough space that you don't need to worry about losing some storage space.)

Thanx for the advice! Yep, the other end will meet the other wall of the L, with cabinets and range. We weren't planning on having uppers, just open shelving, so I guess that was more why I was worried about the symmetry (equal shelves on both sides). But, I really do like the idea of the hutch, and it will give me at least one upper. I'm thinking crystal glasses on top and liquor cabinet on the bottom. perfect.

Impossible to truly visualize aesthetics without pictures and layout, but I just wanted to say dealing with that 15" is a happy catalyst to an individual look, not just ruin of the standard/usual picture (and why should anyone lose sleep or wrack their brains over THAT?). If you handle this even halfway gracefully, your kitchen's "imperfection" will only add charm.