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Tennessee Onions casserole baked golden and cheesy

Tennessee Onions

A classic Southern casserole featuring sweet Vidalia onions baked with butter, herbs, and two kinds of cheese for a rich, savory dish.
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Prep Time 9 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 20 minutes
Course: Dinner
Cuisine: American
Calories: 210
Ingredients Equipment Method Notes

Ingredients
  

  • 2½ lb sweet Vidalia onions sliced into ¼-inch rings
  • 1 tsp dried thyme
  • 1 tsp dried parsley flakes
  • 1 tsp garlic salt
  • ½ tsp dried oregano
  • ½ tsp dry mustard
  • ¼ tsp cayenne pepper
  • ¼ cup salted butter cubed
  • 4 oz mild Cheddar cheese shredded
  • 4 oz smoked Gouda cheese shredded

Equipment

  • - Mixing bowl
  • 13×9-inch baking dish
  • Aluminum foil

Method
 

  1. Preheat oven to 350°F and coat baking dish with cooking spray.
  2. Toss onions with seasonings in a bowl.
  3. Spread onions evenly in baking dish.
  4. Top with butter cubes and shredded cheese.
  5. Cover with foil and bake for 40 minutes.
  6. Remove foil and bake for another 30 minutes until golden.
  7. Serve hot as a side or topping.

Notes

Swap Gouda with mozzarella or provolone if desired.
Add extra cayenne for a spicier version.
Store leftovers in the fridge or freezer for later.