Thanks Roxanne. There's one on each side. I didn't show it in the picture but the cutting boards on either side are removable and slide under the backsplash so that grunge doesn't go under them. That was in case I had to refinish or replace them. There is a small rabbet on the counterside edge and they sit on the counter.
If I make another counter top I would still put the elevated platforms in the corners. I like the look better and the space is more usable. There is a toaster oven on the other one and you can use the oven and still have a counter to full of stuff in front of it which would be in the way if it were all flat. They were a bit of a challenge to fit mostly because of fitting to the exposed oak bevel on the splash but I feel they were worth the effort.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.