Preheat oven to 350°. Sauté onion and garlic in hot oil in a small skillet over medium heat 5 minutes or until tender. Whisk together egg and next 4 ingredients in a large bowl. Add ground beef and next 2 ingredients; combine, using hands. Shape mixture into a 9- x 5-inch loaf; place on a lightly greased rack in an aluminum foil–lined broiler pan.
Bake at 350° for 1 hour and 5 minutes or until no longer pink in center. Place barbecue sauce in a small bowl. Cover and microwave at HIGH 30 seconds or until warm. Spread barbecue sauce evenly on top of meatloaf. Let stand 10 minutes before serving.
Southern Living Off the Eaten Path; Loveless Cafe and Motel, Nashville, Tennessee