Tennessee onions are one of those humble Southern dishes that surprise you with just how good they are. Simple ingredients come together in the oven to create a rich, cheesy onion bake that’s tender in the middle, golden and bubbly on top, and packed with deep, savory flavor. It’s comfort food at its finest.
Sweet onions are the star of the show here. As they bake, they soften and caramelize slightly, losing their sharpness and becoming mellow, buttery, and almost creamy. When paired with a generous blend of cheeses, the onions transform into something far more indulgent than traditional onion rings.
This dish is especially beloved in the South because it’s effortless and crowd-pleasing. There’s no breading, no frying, and no mess—just layering, seasoning, and baking. The result is a casserole-style side dish that feels rich and satisfying without being complicated.
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Tennessee onions are perfect alongside burgers, steaks, barbecue, or roasted chicken. They also shine at potlucks and family gatherings, where they tend to disappear fast. Once you try them, they’re bound to become a repeat favorite.
Servings: 4–6
Prep time: 10 minutes
Cook time: 35 minutes
Total time: 45 minutes
Ingredients
- 3–4 large sweet onions (Vidalia preferred)
- 1 cup shredded cheddar cheese
- 1 cup shredded mozzarella or Monterey Jack cheese
- ½ cup grated Parmesan cheese
- 4 tablespoons butter, melted
- 1 teaspoon garlic powder
- ½ teaspoon salt
- ½ teaspoon black pepper
- ½ teaspoon dried thyme or oregano
- Chopped parsley, optional, for garnish
Instructions:
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