Golden Onion Casserole Recipe

Indulge in this exquisite Golden Onion Casserole, inspired by the classic French onion soup! This comforting and elegant dish, featured on KCTS9's holiday cooking special with Joan Schlonga, is perfect for impressing your guests. Layers of caramelized onions, a creamy, rich sauce, and perfectly browned bread create a symphony of flavors that will leave everyone wanting more. Get ready to wow your holiday table!

Prep Time 20 mins
Cook Time 55 mins
Calories 417.2 kcal
Protein 16g
Rating Be the first
Golden Onion Casserole 32

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Golden Onion Casserole

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How to Make Golden Onion Casserole

  1. Melt 1/4 cup (1/2 stick) butter in a large skillet over medium heat. Add 4 large yellow onions, thinly sliced, and sauté for 15-20 minutes, stirring occasionally, until deeply caramelized and golden brown.
  2. Transfer the caramelized onions to a 2-quart greased baking dish.
  3. In a medium saucepan, melt the remaining 1/4 cup (1/2 stick) butter over low heat.
  4. Whisk in 1/4 cup all-purpose flour and cook for 2 minutes, stirring constantly, until the mixture is smooth and golden.
  5. Gradually whisk in 2 cups milk and 1 cup beef bouillon, stirring constantly until the sauce thickens.
  6. Season with 1 teaspoon salt, 1/2 teaspoon black pepper, and 1/4 cup dry sherry. Simmer for 6-7 minutes.
  7. Pour the sauce over the caramelized onions in the baking dish.
  8. Sprinkle 1 1/2 cups shredded Gruyere cheese (or Swiss cheese) evenly over the onions.
  9. Brush 4 slices of bread (about 1/2 inch thick) with melted butter.
  10. Arrange the bread slices on top of the cheese, completely covering the casserole.
  11. Bake in a preheated oven at 350°F (175°C) for 30-35 minutes, or until the bread is golden brown and the casserole is bubbly.

Nutrition Information (Approximate per serving)

Sodium

29 g

Sugar

30g

Fat

69g

Carbs

10g

Frequently Asked Questions

How long does it take to make Golden Onion Casserole?

Golden Onion Casserole takes about 75 minutes from start to finish — roughly 20 minutes to prepare and 55 minutes to cook.

How many calories are in Golden Onion Casserole?

Golden Onion Casserole has approximately 417.2 calories per serving, with about 16 g protein, 10 g carbohydrates and 35 g fat.

What ingredients do I need for Golden Onion Casserole?

The key ingredients for Golden Onion Casserole are Yellow Onions, Butter, Flour, Salt, White Pepper, Whole Milk. See the full list with measurements above.

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