Tennessee onions combine layers of sweet Vidalia onions with rich butter, spices, and a medley of cheeses for a savory delight. Each round remains intact, absorbing melted butter and a blend of Italian cheeses, cheddar, and Parmesan, turning tender in the oven. The result is a golden, bubbly casserole with a comforting, sweet-savory flavor and irresistible aroma—perfect for serving warm as a side or star dish at gatherings. This dish highlights the natural sweetness of onions, complemented by garlic and oregano, baked to perfection!
Tennessee onions are the answer when you crave all the best things about onion rings but with more cheese and way less fuss. This simple bake transforms sweet onions into a bubbling dish that pairs perfectly with almost any comfort meal and always disappears at potlucks.
I tried these first at a friend’s backyard barbecue years ago and have been making them for every family gathering since then. Each time the gooey cheese and caramelized onions get rave reviews and not a single morsel is ever left over.
Ingredients
Vidalia sweet onions: Choose onions that feel firm and heavy for their size the sweeter the better
Unsalted butter: Adds richness and helps the onions become luxuriously tender
Salt: Enhances the natural sweetness of the onions choose a flaky or kosher salt for best flavor
Garlic powder: For a keen but subtle garlic background
Oregano: Brings a hint of freshness with Italian notes dried oregano is great here
Italian blend cheese: Melty goodness with depth from several cheeses check for a blend with mozzarella parmesan provolone asiago and romano
Cheddar cheese: Gives a classic tangy sharpness select a bold cheddar for more kick
Parmesan cheese: Lends a salty nutty finish use freshly grated for best melting and flavor
Instructions
Preheat the Oven:
Set your oven to 350 degrees Fahrenheit This heat lets the onions soften completely and the cheeses become golden on top
Prepare the Baking Dish:
Grease a nine by thirteen inch baking dish generously with nonstick spray so nothing sticks and cleanup is easier
Slice the Onions:
Take your Vidalia onions peel them and slice into thick rounds about one quarter inch Each slice should hold its shape and rings together for the best texture in the bake
Arrange and Season the Onions:
Place onion rounds in a single layer covering the dish and try not to separate the rings This helps with presentation and keeps the whole slice juicy Sprinkle with salt garlic powder and oregano so every bite comes out flavorful
Add the Butter:
ADVERTISEMENT
