Cracker Barrel is headquartered in Lebanon, Tennessee. The model for Cracker Barrel's veggies is to be found in a local Mom and Pop restaurant that has been operating in Lebanon for over 60 years. It is called the Sunset Restaurant. You will not find better veggies anywhere, and their meats are good too, as are their biscuits and rolls. The place is packed every day at lunch and most of the time at dinner, but the service is exceptional. Even when the place is crawling with customers, they will get you served very promptly. Be sure to order the creamed corn.
An Uncle Bud's catfish restaurant opened next door to Sunset a few years back. I drove past that site several times over a several-month period and Sunset was always doing big business, but there were few cars at Uncle Bud's. Do not try to compete with Sunset in Lebanon; you will likely go the way of Uncle Bud's. Most Lebanon natives I know--and I know a bunch, since my wife is from there--don't go to Cracker Barrel; they ride off to the Sunset.