Southlake FoodMart, a gas station grill, offers an unexpected culinary delight. Their hand-packed burgers, described as "Texas-sized" with a light, fine-grained texture, are the highlight. The burgers are praised for their remarkable quality, with a thick yet non-greasy and non-crumbly patty, and a fresh, pliable bun. While not a fancy establishment, the prices are reasonable, and customers can enjoy their meal inside if desired. The grill is particularly busy at lunchtime, attracting a crowd of working customers. Though the grill's hours can be inconsistent, the burgers are consistently excellent, with one reviewer calling it the "best hamburger in Southlake." The menu also includes tasty onion rings with a unique tempura-style breading. Overall, Southlake FoodMart provides a surprisingly high-quality dining experience in an unassuming gas station setting.