Tennessee Onions – The Cheesy Southern Side Dish Everyone Loves

Tennessee Onions: A Southern Delight 🧅🧈🧀

Sweet, melty, golden, and bubbling with cheese, Tennessee Onions are the kind of humble dish that makes Southern food so comforting and unforgettable. This recipe transforms simple sweet onions into something magical by layering them with butter, sharp cheddar cheese, and crunchy breadcrumbs before baking them to perfection.

Whether you’re hosting a family BBQ, looking for a simple weeknight side, or planning a holiday meal, this dish belongs on your table. It’s easy to prep, made with pantry staples, and totally unforgettable once you’ve had that first bite.


Why I Love This Recipe

There’s just something about the alchemy of sweet onions, butter, and cheese that feels like a warm hug. This recipe is ultra-simple, affordable, and incredibly satisfying. It’s also endlessly adaptable—switch up the cheese, add a pinch of heat, or even toss in herbs to make it your own.

If you grew up in the South, this dish probably brings back memories. And if you didn’t? One bite and you’ll understand why it’s a staple in Southern kitchens.


Origin of Tennessee Onions

Straight from the heart of the South, Tennessee Onions are a beloved comfort food casserole that celebrates the natural sweetness of slow-baked onions. Often served at church potlucks, family reunions, and casual BBQs, this recipe showcases how simple ingredients—when prepared with care—can deliver deep, rich flavor.


Ingredients

  • 2 large sweet onions (like Vidalia), sliced into rings
  • 2 tablespoons butter, melted
  • 1 cup grated cheddar cheese (sharp or smoked)
  • ½ cup breadcrumbs
  • Salt and pepper, to taste

Equipment Needed

  • 1 baking dish (8×8 or 9×9-inch works great)
  • Grater
  • Knife and cutting board
  • Measuring cups and spoons

Step-by-Step Instructions

1. Preheat the Oven

Preheat your oven to 350°F (175°C).

2. Prepare the Onions

Peel and slice the onions into thick rings. Try to keep the slices uniform for even cooking.

3. Layer the Onions

Grease a baking dish with butter or cooking spray. Layer the onion rings evenly in the dish, overlapping slightly.

4. Add Butter and Cheese

Drizzle melted butter over the onions. Sprinkle the grated cheddar cheese evenly across the top.

5. Top with Breadcrumbs

Add breadcrumbs on top of the cheese, then season lightly with salt and pepper.

6. Bake

Bake uncovered for 30–35 minutes, until the cheese is melted and bubbling and the breadcrumbs are golden brown.

7. Serve and Enjoy

Let sit for a few minutes before serving. Garnish with chopped parsley or chives if desired.


Tips and Variations

  • Use sweet onions like Vidalia, Texas 1015, or Walla Walla for the best natural sweetness.
  • Add a kick: Mix a pinch of cayenne or red pepper flakes into the breadcrumbs.
  • Swap the cheese: Smoked gouda, Monterey Jack, or mozzarella can all work beautifully.
  • Double it up: This recipe doubles easily for bigger gatherings—just use a 9×13-inch pan.
  • Low-carb version: Omit the breadcrumbs and top with crushed pork rinds or leave it cheesy and crisp as-is.

Garnishes & Presentation

Sprinkle freshly chopped parsley or snipped chives on top before serving to add a pop of green and a hint of freshness. Serve directly in the baking dish for that cozy, homey appeal.


Serving Suggestions & Pairings

These Tennessee Onions are the ultimate sidekick to grilled and roasted dishes. Try pairing them with:


Storage & Reheating

  • Refrigerator: Store leftovers in an airtight container for up to 3 days.
  • Reheat: Use the oven at 350°F to restore crispiness. Avoid the microwave—it softens the breadcrumb topping.
  • Freezer: Not recommended as the texture of baked onions changes significantly after freezing.

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Final Thoughts

Tennessee Onions are a celebration of simplicity, Southern flavor, and home-cooked comfort. If you’ve never thought onions could steal the show, this dish will prove otherwise. Make it once, and it just might become your new favorite side.

Tried it with a twist? Let us know in the comments—and follow ChefManiac.com for more Southern staples and delicious everyday dishes.