Introduction to Tennessee Onions
Why Tennessee Onions are a Must-Try Dish
If you're searching for a dish that tangibly embodies Southern comfort food, look no further than Tennessee Onions. This delectable casserole features layers of sweet onions, a rich blend of cheeses, and just the right amount of spice, making it a perfect side for any meal or even a delightful main dish.
Originating from the heart of Tennessee, this recipe pays homage to the region's love for Vidalia onions, known for their mild, sweet flavor. These onions thrive in the fertile soils of the South and are ideal for baking, as they become beautifully tender and caramelized when cooked. If you're a fan of cheese, you’ll absolutely adore how the meld of cheddar, smoked gouda, and Parmesan creates a wonderfully creamy texture that keeps you coming back for seconds.
A crowd-pleaser at family gatherings and potlucks, Tennessee Onions requires minimal effort for maximum flavor. Plus, they're a fantastic option for those seeking comfort food that feels special without taking hours to prepare. So grab your ingredients, get your apron on, and discover why this dish deserves a spot in your recipe repertoire. For more Southern inspiration, check out Southern Living's collection on classic Southern dishes!

Ingredients for Tennessee Onions
Creating delicious Tennessee Onions starts with a few simple yet flavorful ingredients that bring warmth and comfort to any meal. Here’s what you’ll need:
Main Ingredients
- Cooking spray: For easy clean-up and to prevent sticking.
- 3 pounds Vidalia or sweet onions: About 4 large onions sliced crosswise into ¼-inch-thick slices.
- Kosher salt: 1 ½ teaspoons to enhance the flavors.
- Mustard powder, garlic powder, smoked paprika: Each a teaspoon for that extra punch of taste.
- Cayenne pepper: ¼ teaspoon, optional, for those who like a little kick!
- Cheeses: 4 ounces each of mild cheddar and smoked Gouda, shredded, plus 1 ¼ ounces of grated Parmesan.
Optional Ingredients
- Unsalted butter: 4 tablespoons (½ stick), diced for richness.
- Fresh parsley: 2 tablespoons, finely chopped for garnish, adding a touch of freshness.
Ready to make these flavorful Tennessee Onions? You can find high-quality ingredients at your local grocery store or explore online options to get the best fresh onions and spices. Let these ingredients shine in your kitchen!
Step-by-Step Preparation of Tennessee Onions
Cooking can be a delightful journey, especially when it involves a dish as comforting as Tennessee Onions. These beautifully baked layers of sweet onions and cheesy goodness are perfect for any occasion. Let’s get right into the step-by-step process that will turn your kitchen into a culinary haven.
Preheat the Oven and Prepare the Baking Dish
First things first—set your oven to 350ºF (about 180ºC). This is the perfect temperature to allow those Tennessee Onions to soften while developing that rich flavor. While the oven is heating up, grab your 9x13-inch baking dish and lightly coat it with cooking spray. This little step will prevent sticking and make cleanup a breeze. There’s nothing worse than delicious food stuck to the pan!
Toss the Sliced Onions with Seasonings
Now it’s time to highlight the star of this recipe: the onions. Take your 3 pounds of sliced Vidalia or sweet onions and separate them into rings in a large bowl. Add 1 ½ teaspoons of kosher salt, 1 teaspoon of dry mustard powder, 1 teaspoon of garlic powder, 1 teaspoon of smoked paprika, and if you like a little kick, add ¼ teaspoon of cayenne pepper. Toss everything together until the onions are well-coated. The combination of these seasonings will give your dish an incredible depth of flavor that’s sure to impress.
Layer the First Half of the Onions and Cheeses
Next, let’s build the foundation of your Tennessee Onions. Place half of the seasoned onion rings in an even layer at the bottom of your prepared baking dish. Then sprinkle 2 ounces of shredded mild cheddar cheese and 2 ounces of smoked Gouda cheese over the onions. The cheddar adds a creamy richness while the Gouda brings a lovely smoky flavor. Can you smell that? It’s the scent of a dish coming together beautifully!
Add the Second Layer of Onions and Cheeses
Time for round two! Layer the remaining onion rings on top, evenly distributing them. Follow this with another sprinkle of 2 ounces each of shredded mild cheddar and smoked Gouda to make sure every bite is cheesy perfection. Now, for the finishing touch on the cheesy layers, add 1 ¼ ounces of grated Parmesan cheese on top. Don’t forget the 4 tablespoons of diced unsalted butter to enhance the flavors and give it that perfect richness.
Bake and Finish Off with Parsley
Cover your baking dish with aluminum foil and pop it into the oven. Bake for about 45 minutes, or until those onions are beautifully softened and bubbling. After that, remove the foil and let it bake for an additional 30 minutes, or until the cheese on top becomes wonderfully melted and golden brown. Just before serving, sprinkle with finely chopped fresh parsley for a pop of color and freshness.
And there you have it—your luscious Tennessee Onions are ready to be devoured. Serve it as a delightful side dish or a comforting main course. Pair it with a refreshing salad or crusty bread, and you’re in for an incredible meal experience. Happy cooking!

Variations on Tennessee Onions
Add Cooked Turkey Bacon
For a savory twist on your classic Tennessee Onions, consider adding crispy cooked turkey bacon. Just chop the bacon into bite-sized pieces and layer it in with the onions and cheese. The smoky flavor from the turkey bacon lends a delightful richness to the dish, making each bite tantalizingly delicious. Plus, who can resist that irresistible crunch? It’s an easy way to elevate your casserole and add some extra protein to your meal—perfect for family gatherings or weeknight dinners.
Incorporate Different Cheese Blends
Don’t be afraid to get a little creative with your cheese choices in Tennessee Onions! While the recipe calls for mild cheddar and smoked Gouda, other blends can enhance the flavor profile. Try using pepper jack for some heat, or a creamy fontina for extra richness. Mixing in a bit of blue cheese can add a sharp bite, while a sprinkle of mozzarella offers that melty stretch we all love. Experiment with different combinations to find your perfect cheesy match! For more ideas on cheese pairings, check out this guide on cultured cheese.
Cooking Tips and Notes for Tennessee Onions
Choosing the Right Onions
When making Tennessee Onions, selecting the right onions is crucial. Fresh Vidalia onions or other sweet onions work best, thanks to their natural sweetness and lower sulfur content. Look for firm onions with a smooth exterior. You might also consider experimenting with Walla Walla or Maui onions for a unique flavor twist. If you're curious about the different onion varieties, check out this guide on onion types.
Tips for Perfect Caramelization
To achieve that rich, caramelized flavor in your Tennessee Onions, ensure you're cooking them slowly at a moderate temperature. Start by treating them gently in the oven and avoid overcrowding the baking dish, as this can create steam rather than facilitate browning. Additionally, incorporating a touch of sugar with the spices can enhance that sweet caramelization. For a diverse flavor palette, consider adding fresh herbs like rosemary or thyme during the final cooking phase.

Serving Suggestions for Tennessee Onions
As a Side Dish
Tennessee Onions make a delightful and comforting side dish, perfect for family dinners or gatherings. Their rich flavors and cheesy goodness complement a variety of meals. Serving them alongside roasted vegetables or a fresh garden salad adds balance, creating a well-rounded plate. If you’re in the mood for a cozy evening, pair them with mashed potatoes for a hearty feast that warms your soul.
Pairing with Proteins Like Chicken Ham or Beef
When it comes to proteins, Tennessee Onions shine next to options like chicken ham or beef. The creamy, savory layers of cheese and caramelized onions enhance the flavors of grilled chicken or a juicy steak, making every bite a treat. For a twist, consider serving them with turkey bacon for a smokier flavor profile. This combination not only satisfies cravings but is also sure to impress guests!
Looking for more tips on how to serve up Tennessee Onions? Don't hesitate to explore sites like EatingWell or Bon Appétit for creative ideas!
Time Breakdown for Tennessee Onions
Preparation time
Prepare your ingredients and get everything ready in about 20 minutes. This includes slicing the onions and measuring out spices, making it a quick start to your dish.
Baking time
Once assembled, pop your Tennessee Onions in the oven for about 1 hour and 15 minutes. This allows the flavors to meld beautifully while the onions soften and the cheese becomes bubbly and golden.
Total time
So, from start to finish, you’re looking at a total of 1 hour and 35 minutes. That’s a worthwhile investment for a delightful side dish that will impress your friends and family!
For more culinary inspiration, check out resources like Serious Eats for their insights into the perfect cheese pairings or Bon Appétit for tips on onion varieties!
Nutritional Facts for Tennessee Onions
When diving into Tennessee Onions, understanding the nutritional profile can help you enjoy this delightful dish guilt-free.
Calories
The Tennessee Onions casserole is a comforting dish, providing approximately 250 calories per serving, making it a hearty option for family meals or gatherings.
Protein
Packed with cheese and onions, each serving offers about 10 grams of protein. This not only supports muscle health but also helps keep you feeling satisfied.
Sodium
Being mindful of sodium intake is essential, especially in modern diets. This dish contains around 450 milligrams of sodium per serving, so you might consider adjusting the salt usage based on your dietary needs.
If you're looking to explore the health benefits of onions, check out WebMD for more insights! Embrace the flavors and health perks of these delicious Tennessee Onions, and enjoy the cooking journey!
FAQs about Tennessee Onions
What are the best onions for this dish?
For the best Tennessee Onions, sweet onions are a must! Vidalia onions are the star here, known for their mild flavor and natural sweetness. If you can’t find Vidalia, other sweet varieties like Walla Walla or Maui onions will work well too. The key is to choose onions that will caramelize beautifully and complement the rich cheeses in the recipe.
Can I make Tennessee onions ahead of time?
Absolutely! You can prepare your Tennessee Onions in advance by slicing the onions and mixing in the spices and cheeses. Store the assembled dish in the fridge for up to 24 hours before baking. This not only saves time but allows the flavors to meld beautifully!
How can I store leftovers?
If you have any leftovers of your delicious Tennessee Onions, store them in an airtight container in the refrigerator for up to 4 days. For optimal flavor, reheat them gently in the oven or microwave. Enjoy them warmed up or use them as a savory topping for a salad or sandwich!
For more tips on storing onions, check out this helpful guide.
Conclusion on Tennessee Onions
Embrace homemade comfort with Tennessee Onions
Tennessee Onions serve as a warm, comforting dish that's perfect for gatherings or a cozy night in. With their rich layers of flavor and gooey cheese, they elevate any meal. Try making these delightful onions at home – your tastebuds will thank you. For more culinary inspirations, check out The Kitchn or Serious Eats.

Tennessee Onions
Equipment
- 9x13 inch baking dish
- large bowl
Ingredients
Onions and Seasoning
- 3 pounds Vidalia or sweet onions, cut crosswise into ¼-inch-thick slices
- 1.5 teaspoons kosher salt
- 1 teaspoon dry mustard powder
- 1 teaspoon garlic powder
- 1 teaspoon smoked paprika
- 0.25 teaspoon cayenne pepper optional
Cheeses
- 4 ounces mild cheddar cheese, shredded about 1 cup, divided
- 4 ounces smoked Gouda or cheddar cheese, shredded about 1 cup, divided
- 1.25 ounces grated Parmesan cheese about ⅓ cup store-bought grated
Other Ingredients
- 4 tablespoons unsalted butter, diced (½ stick)
- 2 tablespoons finely chopped fresh parsley leaves for garnish (optional)
Miscellaneous
- cooking spray
Instructions
Preparation
- Heat the oven to 350ºF. Lightly coat a 9x13-inch baking dish with cooking spray. Separate 3 pounds sliced Vidalia onions into rings and place in a large bowl. Add 1 ½ teaspoons kosher salt, 1 teaspoon dry mustard powder, 1 teaspoon garlic powder, 1 teaspoon smoked paprika, and ¼ teaspoon cayenne pepper, and toss to coat.
Layering
- Arrange half of the onion rings in an even layer in the baking dish. Sprinkle evenly with 2 ounces shredded mild cheddar cheese and 2 ounces shredded smoked Gouda cheese (about ½ cup each).
- Arrange the remaining onions on top and sprinkle with the remaining 2 ounces each shredded mild cheddar and smoked Gouda. Sprinkle evenly with 1 ¼ ounces grated Parmesan cheese. Scatter 4 tablespoons diced unsalted butter on top.
Baking
- Cover the baking dish with aluminum foil. Bake until the onions are softened and the casserole is bubbling, about 45 minutes. Uncover and bake until the cheese on top is melted and browned in spots, about 30 minutes more. Sprinkle with 2 tablespoons finely chopped fresh parsley leaves if desired.





Leave a Reply