Tennessee Onions are a Southern-inspired, baked onion side dish that turns simple ingredients into a rich, cheesy, savory delight. Thick slices of sweet onions are layered in a baking dish and smothered with a blend of cheeses, butter, and savory seasonings. Baked until bubbly and golden, this dish is the perfect addition to any meat-and-potatoes meal, barbecue spread, or holiday table. The combination of melty cheese and tender onions is unexpected yet irresistible, making Tennessee Onions a recipe worth adding to your comfort food rotation.
Ingredients
- 3–4 large sweet onions (Vidalia or yellow), sliced into 1/4-inch rounds
- 2 tablespoons unsalted butter, melted
- 1 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/2 teaspoon paprika
- Salt and black pepper, to taste
- 1 cup shredded mozzarella cheese
- 1 cup shredded cheddar cheese
- 1/2 cup shredded Monterey Jack cheese
- 1/4 cup grated Parmesan cheese
- Optional: chopped fresh parsley, for garnish
Preparation
Step 1: Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
Step 2: Peel and slice onions into 1/4-inch thick rings. Separate the rings and layer them evenly in the baking dish.
Step 3: Drizzle melted butter over the onion slices.
Step 4: Sprinkle garlic powder, onion powder, paprika, salt, and pepper evenly over the onions.
Step 5: In a bowl, combine the shredded cheeses (mozzarella, cheddar, Monterey Jack, and Parmesan).
Step 6: Sprinkle the cheese mixture evenly over the onions, covering them fully.
Step 7: Cover the baking dish with foil and bake for 30 minutes.
Step 8: Remove foil and bake for an additional 10–15 minutes, or until the top is bubbly and lightly browned.
Step 9: Let rest for 5 minutes, then garnish with chopped parsley if desired. Serve warm.
Variation
- Spicy kick: Add crushed red pepper flakes or jalapeños to the cheese mixture
- Meaty version: Mix in cooked, crumbled bacon or sausage before baking
- Low-carb: Skip the cheddar and use all mozzarella and Parmesan for fewer carbs
- Creamy: Add a splash of heavy cream before baking for a saucier finish
- Herbed: Add fresh thyme or rosemary for an earthy note
- Cheese swap: Use Gruyère, Havarti, or Fontina in place of cheddar or Jack
- Individual servings: Bake in ramekins for personal portions
Cooking Notes
- Use Vidalia onions for their natural sweetness
- Slice onions evenly to ensure uniform cooking
- Avoid overbaking, cheese should be bubbly but not burnt
- Let it rest after baking for better texture and easier serving
- Use freshly shredded cheese for best melting and flavor
- Bake uncovered at the end for a browned, crispy cheese top
- Add a foil-lined baking sheet underneath if cheese bubbles over
Serving Suggestions
- Serve as a side with grilled steaks or roast chicken
- Perfect alongside mashed potatoes or meatloaf
- Great for BBQs, potlucks, or holiday dinners
- Pair with burgers or hot sandwiches for a bold side
- Add to a brunch buffet as a savory baked option
- Serve with a fresh salad for a balanced meal
- Pairs well with cornbread or Texas toast
Tips
- Use sweet onions like Vidalia or Walla Walla for best flavor
- Shred your own cheese for better melt and fewer additives
- Adjust seasoning to taste, onions absorb lots of flavor
- Don’t skimp on cheese, more is better in this dish
- Make ahead and reheat gently in the oven
- Add breadcrumbs on top for a crunchy finish
- Garnish with parsley or chives for a fresh look
Prep Time: 10 minutes
Cooking Time: 40–45 minutes
Total Time: 55 minutes
Nutritional Information
(Per Serving – serves 6)
Calories: 290
Protein: 11g
Fat: 22g
Carbs: 12g
Fiber: 2g
Sugar: 6g
FAQs
What are Tennessee Onions?
- Tennessee Onions are a Southern-style baked dish featuring sweet onions layered with butter, seasonings, and cheese, then baked until golden and bubbly.
Can I use regular onions instead of sweet onions?
- Yes, but the flavor will be stronger and less sweet. Yellow onions are the closest substitute.
Can I make this ahead of time?
- Yes. Assemble the dish up to a day in advance, cover tightly, and refrigerate. Bake when ready to serve.
Do I need to pre-cook the onions?
- No. They bake until tender in the oven, so no pre-cooking is necessary.
Can I freeze Tennessee Onions?
- It’s best enjoyed fresh, but you can freeze leftovers. Reheat in the oven for best results.
Conclusion
Tennessee Onions are a delicious, cheesy Southern comfort dish that elevates humble ingredients into a crave-worthy side. The sweetness of baked onions paired with gooey, golden cheese and flavorful spices creates a unique combination that everyone will love. Whether you’re serving a holiday roast or a casual weeknight meal, this recipe is easy to prepare, family-friendly, and always a hit. Give it a try and watch this simple dish steal the spotlight on your dinner table.