N00b question about cookie texture

You guys will probably be able to answer this in a flash. I want to make a cookie with an irregular browned edge. You know those cookie-press extruded cookies (Christmas stars, lambs, camels etc.)? I want to make a camel cookie with a light center and a darkened edge. I figure there is a setting that will let me get this, but I don’y know what it is. Thank you in advance for your time and advice.

You might be able to do this with a color ramp shader.
http://mediawiki.blender.org/index.php/Manual/PartIII/Ramp_Shaders

If your desired final picture has all the cookies face-on to the camera (that is, none of them are edge-on), you should be able to make a ramp shader that will add a brown tinge to the cookie edges.

Thanks, that will probably work for me since all the cookies will stay face on to the camera.