Rick you have the right idea on the camera settings and that is a beautiful shot. When I shoot my food photos I don't use a tripod and I want to shoot fast so I can eat the food while it's hot. I shoot all of mine in the macro (close up) mode. This gives me a fast shutter speed and a lower fstop for a shallow DOF. Food on a plate to me does not need a deep DOF. In macro mode the camera decides the settings, it is better than I am at it. The fast shutter speed lets you shoot hand held with good results.
I usually shoot at least 3 photos sometimes changing the shooting angle some. Then I pick the best of the 3.
I do some post processing of all my photos in Photoshop Elements, a cheap version of Photoshop. I do a lighting levels adjustment and an unsharp mask. Your camera will be better than mine and might not need the post processing.
Below is a shot I just did, shot in macro mode, and the camera chose ISO 200, exposer time 1/60 second, at f8.
Original out of the camera
After a levels adjustment and an unsharp mask
Hope this helps, Don