French Onion Pasta Casserole

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  • Prep Time

    15 mins

  • Cook Time

    1 hr

  • Total Time

    1 hr 15 mins

  • Servings

    8 servings

  • Calories

    454 kcal

  • Course

    Main Course

  • Cuisine

    American

French Onion Pasta Casserole

All the flavors of French onion soup in a one-pot pasta casserole, with caramelized onions, garlic croutons, and melty Gruyère cheese.

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Ingredients

Servings

Pasta

  • 2 tablespoons olive oil
  • 6 medium yellow onions sliced
  • 2 tablespoons butter
  • 1 tablespoon minced garlic  about 3 cloves
  • 8 cups beef broth
  • 1/4 cup dry sherry optional
  • 1 teaspoon dried thyme
  • 1 teaspoon salt or to taste
  • 1/2 teaspoon black pepper or to taste
  • 12 ounces rigatoni

Topping

  • 3 cups garlic croutons
  • 2 cups shredded gruyere cheese or provolone
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Instructions

  1. Heat 2 tablespoons olive oil in a large, oven-safe pot over medium-high heat. Add the sliced onions and cook, stirring occasionally, until they begin to soften, about 5-7 minutes. Reduce the heat to medium-low and continue cooking, stirring every 3-5 minutes, until the onions are deeply caramelized and golden brown, about 15-25 minutes.
  2. Once the onions are caramelized, add 2 tablespoons butter and 1 tablespoon minced garlic. Cook for 2 minutes, until the butter has melted and the garlic is fragrant.
  3. Pour in 8 cups beef broth and 1/4 cup dry sherry (if using). Season with 1 teaspoon dried thyme, 1 teaspoon salt, and 1/2 teaspoon black pepper. Bring the mixture to a simmer over medium-low heat and let it simmer for 10 minutes.
  4. While the mixture is simmering, preheat your oven to 350°F (175°C).
  5. Add 12 ounces rigatoni to the pot and let it simmer for an additional 10 minutes, stirring occasionally to ensure the pasta cooks evenly.
  6. After the pasta has cooked, remove the pot from heat. Evenly distribute 3 cups garlic croutons over the top of the pasta, pressing them gently into the casserole. Sprinkle 2 cups shredded gruyere cheese (or provolone) over the crouton layer.
  7. Transfer the pot to the preheated oven. Bake for 20 minutes, or until the cheese is bubbly and golden brown on top.
  8. Remove the casserole from the oven and let it rest for 5 minutes before serving.

Notes

  • If you don't have an oven-safe pot don't worry! You can still make this dish by preparing the pasta as directed and then transferring it to a 9x13 pan. Top with the croutons and cheese and then bake as directed.

Nutrition Information

Show Details
Serving 1serving Calories 454kcal (23%) Carbohydrates 49g (16%) Protein 20g (40%) Fat 19g (29%) Saturated Fat 9g (45%) Polyunsaturated Fat 1g Monounsaturated Fat 7g Trans Fat 0.1g Cholesterol 44mg (15%) Sodium 1527mg (64%) Potassium 399mg (11%) Fiber 3g (12%) Sugar 5g (10%) Vitamin A 407IU (8%) Vitamin C 6mg (7%) Calcium 391mg (39%) Iron 2mg (11%)

Nutrition Facts

Serving: 8servings

Amount Per Serving

Calories 454 kcal

% Daily Value*

Serving 1serving
Calories 454kcal 23%
Carbohydrates 49g 16%
Protein 20g 40%
Fat 19g 29%
Saturated Fat 9g 45%
Polyunsaturated Fat 1g 6%
Monounsaturated Fat 7g 35%
Trans Fat 0.1g 5%
Cholesterol 44mg 15%
Sodium 1527mg 64%
Potassium 399mg 8%
Fiber 3g 12%
Sugar 5g 10%
Vitamin A 407IU 8%
Vitamin C 6mg 7%
Calcium 391mg 39%
Iron 2mg 11%

* Percent Daily Values are based on a 2,000 calorie diet.

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