There’s something soul-satisfying about the way Tennessee Onions melt into gooey, golden perfection. This dish takes humble onions and transforms them with layers of buttery richness and sharp cheese, baked until bubbling and caramelized. It’s that blend of southern comfort and irresistible simplicity that makes this recipe a standout for gatherings, barbecues, or any weeknight that needs a little extra flavor.

Served hot from the oven, these onions become tender and sweet with edges that crisp just right. The cheese and seasoning soak deep into every ring, creating a savory side dish that’s just as popular as the main course. Whether you serve them alongside grilled meat or as part of a potluck table, Tennessee Onions are a guaranteed hit.
Ingredients for this Tennessee Onions Recipe
- 3 to 4 large sweet Vidalia onions, sliced into 1/4 inch rings
- 1/2 cup (1 stick) unsalted butter, melted
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 teaspoon smoked paprika
- Salt and pepper to taste
- 1 1/2 cups shredded mozzarella cheese
- 1 1/2 cups shredded cheddar cheese
- Fresh parsley for garnish (optional)

Step 1: Preheat and Prepare
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish to prevent sticking and ensure easy cleanup.
Step 2: Slice the Onions
Peel the Vidalia onions and slice them into 1/4-inch thick rings. Separate the rings and layer them evenly in the prepared baking dish.
Step 3: Mix the Seasoning
In a small bowl, mix together the melted butter, garlic powder, onion powder, smoked paprika, salt, and pepper.
Step 4: Assemble the Dish
Pour the seasoned melted butter evenly over the onion slices, making sure to coat all layers. Sprinkle the mozzarella and cheddar cheeses over the top.
Step 5: Bake to Perfection
Cover the dish loosely with foil and bake for 30 minutes. Then, remove the foil and continue baking for another 15-20 minutes or until the cheese is bubbly and golden brown.
Step 6: Garnish and Serve
Remove from the oven, let cool slightly, and garnish with fresh chopped parsley if desired. Serve warm as a decadent side dish or comforting snack.
Frequently Asked Questions
Can I use a different type of onion?
Yes, though Vidalia onions are preferred for their sweetness, you can substitute with yellow or white onions. The flavor may be slightly more pungent but still delicious.
Can I make this dish ahead of time?
Absolutely. Assemble everything up to the baking step, cover, and refrigerate for up to 24 hours. Add 5-10 minutes to the baking time if starting from cold.
What cheeses work best?
Mozzarella and cheddar offer the ideal melt and flavor combo. But feel free to experiment with provolone, Monterey Jack, or a sharp white cheddar for a different twist.
Can I add meat to make it a main dish?
Certainly. Cooked and crumbled bacon or chopped smoked sausage can be sprinkled between the onion layers before baking to add heartiness.
Is this dish gluten-free?
Yes, as long as your seasonings and cheeses are certified gluten-free, this dish is naturally gluten-free.
What can I serve with Tennessee Onions?
They pair perfectly with grilled steaks, barbecue ribs, roasted chicken, or even as a topping for burgers or baked potatoes.

Tennessee Onions Recipe
- Prep Time: 10 minutes
- Cook Time: 45–50 minutes
- Total Time: 49 minute
- Yield: Serves 6
- Category: Side Dish
Description
Tennessee Onions are the ultimate comfort food side dish: tender, sweet Vidalia onions layered with melty mozzarella and cheddar, drenched in seasoned butter, and baked until golden and bubbly. This easy recipe transforms everyday onions into a crave-worthy creation that works for barbecues, weeknight dinners, and family gatherings alike. If you’re looking for quick dinner ideas or southern-inspired comfort food, this dish ticks all the boxes. It’s the perfect match for grilled meats, cozy casseroles, or even your next potluck party. With just a few ingredients, it delivers bold flavor and classic southern charm.
Ingredients
3 to 4 large sweet Vidalia onions, sliced into 1/4 inch rings
1/2 cup (1 stick) unsalted butter, melted
1 teaspoon garlic powder
1 teaspoon onion powder
1 teaspoon smoked paprika
Salt and pepper to taste
1 1/2 cups shredded mozzarella cheese
1 1/2 cups shredded cheddar cheese
Fresh parsley for garnish (optional)
Instructions
- Preheat oven to 375°F (190°C) and grease a 9×13-inch baking dish.
- Slice onions into 1/4-inch rings and layer in the baking dish.
- Mix melted butter with garlic powder, onion powder, smoked paprika, salt, and pepper.
- Pour seasoned butter over the onion slices evenly.
- Sprinkle mozzarella and cheddar cheeses over the top.
- Cover with foil and bake for 30 minutes.
- Remove foil and bake an additional 15-20 minutes until cheese is golden and bubbly.
- Garnish with parsley if desired. Serve warm.