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Tennessee Onions Recipe

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★★★★★

4.9 from 121 reviews

Tennessee Onions is a savory baked side dish featuring sweet onion rings smothered in a blend of melted cheddar, Monterey Jack, and Parmesan cheeses, seasoned with garlic, thyme, salt, and pepper. This comforting, cheesy casserole-style recipe is perfect to accompany a variety of main courses and brings a rich, flavorful twist to ordinary onions.

Ingredients

Scale

Vegetables

  • 3 large sweet onions (such as Vidalia), sliced into ½-inch rings

Cheeses

  • 1 ½ cups shredded cheddar cheese
  • 1 cup shredded Monterey Jack cheese
  • ½ cup grated Parmesan cheese

Seasonings & Others

  • 4 tablespoons unsalted butter, melted
  • 1 teaspoon garlic powder
  • ½ teaspoon dried thyme
  • ½ teaspoon salt
  • ¼ teaspoon black pepper

Instructions

  1. Preheat Oven: Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish to prevent sticking and prepare for the onion layering.
  2. Arrange Onions: Place the sliced onion rings in an even layer in the prepared baking dish, ensuring the rings are separated for even cooking and coverage.
  3. Add Butter and Seasonings: Drizzle the melted butter evenly over the onions. Then, sprinkle garlic powder, dried thyme, salt, and black pepper over the layered onions to infuse flavor.
  4. Add Cheese Layers: Spread the shredded cheddar, Monterey Jack, and Parmesan cheeses evenly over the seasoned onions, creating a rich cheesy topping.
  5. Bake Covered: Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes. This allows the onions to soften and the cheese to melt gently.
  6. Bake Uncovered: Remove the foil and bake for an additional 10 minutes, or until the cheese turns golden brown and bubbly, indicating it is perfectly cooked.
  7. Cool and Serve: Allow the baked Tennessee Onions to cool slightly before serving to ensure the cheese sets a bit and the dish is safe to eat. Enjoy as a flavorful side dish.

Notes

  • Use sweet onions like Vidalia for the best flavor and natural sweetness.
  • Make sure to separate the onion rings to allow even cooking and cheese coverage.
  • You can substitute cheeses based on availability, but a blend of cheddar, Monterey Jack, and Parmesan offers the best balance of melt and flavor.
  • Covering the dish while baking helps soften the onions before browning the cheese topping uncovered.
  • Letting the dish rest for a few minutes improves serving texture and flavor melding.

Keywords: Tennessee onions, baked onions, cheesy onion side dish, sweet onions, southern side dish, onion casserole, cheddar cheese, Monterey Jack cheese

Find it online: https://tastewithamy.com/tennessee-onions-recipe/