Cheesy Tennessee Onions Casserole

Savor the taste of the South with this easy Tennessee Onions recipe featuring our signature Georgia Grown Vidalia sweet onions. This Tennessee Onions Casserole is the perfect cheesy side dish for your next potluck or family dinner.

  • 3-4 Vidalia sweet onions, sliced into 1/4-inch slices
  • 2 teaspoons Cajun seasoning, or more to taste
  • 1 teaspoon garlic powder
  • 4 tablespoons butter, cut into 8 slices
  • 1/2 cup shredded Cheddar cheese
  • 1/2 cup shredded mozzarella cheese
  • 1 tablespoon fresh oregano
  • 1/2 cup shaved Parmesan cheese
  1.  Preheat the oven to 350 degrees F (175 degrees C).
  2. Arrange 1/2 of the onions on the bottom of a 9x13-inch casserole dish. Sprinkle with half the Cajun seasoning and half the garlic powder. Repeat with remaining onions, seasoning, and garlic powder.
  3. Arrange butter on top of the onions and top evenly with Cheddar and mozzarella cheese. Sprinkle oregano over cheese and top with Parmesan cheese.
  4. Bake in the preheated oven until onions are tender and cheese is melted, bubbly, and golden brown around the edges, about 35 minutes.