Tennessee Onions are a beloved Southern dish that transforms simple sweet onions into a rich, cheesy, and creamy delight. This easy-to-make casserole is perfect as a side dish for barbecues, holiday feasts, or family gatherings. The natural sweetness of the onions, combined with a buttery, cheesy sauce, creates a mouthwatering dish that pairs well with meats, potatoes, or even on its own. Whether you’re a fan of classic Southern flavors or just looking for a new way to enjoy onions, this recipe is a must-try.
Ingredients:
• 3–4 large sweet onions (such as Vidalia or Walla Walla)
• 1 cup shredded cheddar cheese
• ½ cup shredded mozzarella cheese
• ½ cup shredded Parmesan cheese
• ½ cup mayonnaise
• ½ cup sour cream
• ½ cup unsalted butter (melted)
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• ½ teaspoon salt
• ½ teaspoon black pepper
• ½ teaspoon paprika (for garnish)
• 1 teaspoon dried parsley (optional)
Instructions:
- Preheat the oven to 350°F (175°C) and lightly grease a baking dish with butter or nonstick spray.
- Slice the onions into thick rings, about ¼-inch thick, and separate them into individual rings.
- Layer the onions evenly in the prepared baking dish, ensuring they are spread out to allow the cheesy sauce to coat them properly.
- Prepare the cheese mixture by combining cheddar, mozzarella, and Parmesan cheese in a medium bowl. Set aside a small portion of the cheese mix for topping.
- Mix the creamy sauce by whisking together mayonnaise, sour cream, melted butter, garlic powder, onion powder, salt, and black pepper in a separate bowl until smooth and well combined.
- Coat the onions by pouring the creamy sauce evenly over the layered onions, ensuring they are well covered.
- Sprinkle the cheese mixture generously over the top, allowing it to melt into the sauce and onions as they bake.
- Bake the dish uncovered for 30–40 minutes, or until the cheese is melted, bubbly, and slightly golden brown on top.
- Garnish with paprika and optional dried parsley for an extra touch of color and flavor.
- Let it rest for a few minutes before serving to allow the flavors to meld together.
- Serve warm as a delicious side dish with grilled meats, roasted chicken, or even a crusty slice of bread.