You can convert the SDL/OpenGL template to a GLUT template pretty easily. Make a copy of the SDL/OpenGL template folder and open your copy's Xcode project. You'll want to remove the parts of the SDL template you don't need for a GLUT template. Remove the SDL, AppKit, Cocoa, and Foundation frameworks from the project. Remove SDLMain.m and SDLMain.h from the project as well as the files in the Atlantis folder, such as atlantis.c.
The main.c file in the SDL template does a lot. You'll want to substitute your own main.c or main.cpp file, depending on whether you want to write your GLUT programs in C or C++. After you get main.c looking the way you want, you have a GLUT project template.