Go Back
–+ servings
Southern Sweet Onion Casserole

Southern Sweet Onion Casserole: Comfort in Every Bite

No ratings yet
This Southern Sweet Onion Casserole is a budget-friendly comfort food that delights with layers of sweet onions, creamy cheese, and a crunchy topping.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 35 minutes
Resting Time 10 minutes
Total Time 1 hour
Servings: 6 servings
Course: Dinner
Cuisine: Southern
Calories: 250
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Casserole
  • 4 large Sweet Onions (e.g., Vidalia) Slice them thin to release optimal sweetness.
  • 4 tablespoons Unsalted Butter Adds richness and helps soften the onions.
  • 1 teaspoon Salt Essential for enhancing all the flavors.
  • 0.5 teaspoon Black Pepper Provides warmth and depth.
  • 1 teaspoon Sugar Optional boost of sweetness.
  • 1 cup Sharp Cheddar Cheese, shredded Classic cheesy flavor.
  • 0.5 cup Mozzarella Cheese, shredded Adds extra creaminess.
  • 1 cup Sour Cream Binds the ingredients together.
  • 2 large Eggs, lightly beaten Helps bind the casserole.
For the Topping
  • 1 cup Crushed Butter Crackers (like Ritz) Creates the crunchy topping.
  • 2 tablespoons Melted Butter Ensures topping is crispy.

Equipment

  • Skillet
  • baking dish

Method
 

Step-by-Step Instructions
  1. Preheat oven to 350°F (175°C). In a skillet, melt butter over medium heat. Add sliced sweet onions, salt, black pepper, and optional sugar. Sauté for about 15 minutes until soft and lightly golden.
  2. Remove skillet from heat, let cool slightly. Stir in sour cream and eggs until smooth. Fold in half of the sharp cheddar and mozzarella cheese.
  3. Grease a 2-quart baking dish. Pour onion mixture into the dish, spreading evenly. Top with remaining cheeses and crushed crackers mixed with melted butter.
  4. Bake uncovered for 30-35 minutes until golden and bubbly.
  5. Remove from oven and let rest for 5-10 minutes before serving.

Nutrition

Serving: 1servingCalories: 250kcalCarbohydrates: 20gProtein: 8gFat: 18gSaturated Fat: 10gPolyunsaturated Fat: 1gMonounsaturated Fat: 1gCholesterol: 70mgSodium: 500mgPotassium: 300mgFiber: 1gSugar: 2gVitamin A: 500IUVitamin C: 5mgCalcium: 200mgIron: 1mg

Notes

For the best flavor, sauté the onions slowly and consider adding spices for a twist. Store leftovers in an airtight container.

Tried this recipe?

Let us know how it was!