Go Back
–+ servings
Tennessee Onions

Indulgent Tennessee Onions Casserole for Savory Comfort

Enjoy the rich flavors of Tennessee Onions in this comforting, gluten-free casserole.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 1 hour 15 minutes
Total Time 1 hour 30 minutes
Servings: 6 servings
Course: Holiday Party Snacks
Cuisine: Southern
Calories: 320
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 4 large Vidalia or Sweet Onions about 3 pounds, sliced
  • 1.5 teaspoons Kosher Salt Enhances the natural sweetness of onions.
  • 1 teaspoon Dry Mustard Powder Adds depth and subtle heat.
  • 1 teaspoon Garlic Powder Provides savory notes that complement onions.
  • 1 teaspoon Smoked Paprika Contributes a smoky flavor profile.
  • 0.25 teaspoon Cayenne Pepper optional, adds spiciness.
For the Cheese Toppings
  • 4 ounces Mild Cheddar Cheese about 1 cup, divided
  • 4 ounces Smoked Gouda or Cheddar Cheese about 1 cup, divided
  • 1.25 ounces Grated Parmesan Cheese about ⅓ cup.
For the Finish
  • 4 tablespoons Unsalted Butter ½ stick, diced.
  • Fresh Parsley for garnish, optional.

Equipment

  • 9x13-inch baking dish
  • mixing bowl

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 350°F (175°C) and spray a 9x13-inch baking dish with cooking spray.
  2. In a bowl, toss 3 pounds of sliced onions with salt, dry mustard, garlic powder, smoked paprika, and cayenne pepper.
  3. Layer half of the seasoned onion rings evenly in the prepared baking dish.
  4. Sprinkle 2 ounces each of shredded cheddar and smoked Gouda over the first layer of onions.
  5. Add the remaining onion rings on top, pressing down gently, followed by remaining cheese.
  6. Sprinkle 1.25 ounces of grated Parmesan cheese on top and scatter diced butter.
  7. Cover with aluminum foil and bake for 45 minutes.
  8. Remove foil and bake uncovered for an additional 30 minutes until golden brown.
  9. Garnish with chopped parsley if desired before serving.

Nutrition

Serving: 1servingCalories: 320kcalCarbohydrates: 18gProtein: 10gFat: 23gSaturated Fat: 14gPolyunsaturated Fat: 0.5gMonounsaturated Fat: 6gCholesterol: 45mgSodium: 600mgPotassium: 300mgFiber: 2gSugar: 4gVitamin A: 500IUVitamin C: 5mgCalcium: 250mgIron: 1mg

Notes

For best results, allow the casserole to rest for a few minutes before serving. Leftovers can be stored in an airtight container for up to 4 days.

Tried this recipe?

Let us know how it was!