In a medium bowl, whisk together flour, cornmeal, baking powder, thyme, and salt. Stir in milk and hot sauce. Add onion; stir until well combined.
In a large nonstick skillet, heat 2 tablespoons oil over medium-high heat. Drop batter by 2 tablespoonfuls into skillet, and flatten slightly. Reduce heat to medium. Cook until golden brown and crispy on bottom, about 2 minutes. Turn, and cook 2 minutes more. Let drain on paper towels, and place on a baking sheet. Keep warm in oven. Repeat with remaining 4 tablespoons oil and remaining batter. Serve warm with Comeback Sauce. Garnish with thyme, if desired.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/vidalia-onion-fritters-comeback-sauce/