The only thing that comes to mind is to bake a cheesecake in a rectangular pan. When baked, freeze. Cut the cake (while still frozen) into the "O" shape. Decorate with BC or fondant. The size pan will be determined by the number of servings. Or you could do a smaller "O" and bake additional cheesecakes for serving.
They want it shaped like that logo or the logo on it. If they want to put the logo on it....PM me for details or look through my pics for logos. Very do-able if they just want it on the cheesecake!