Spaghetti Lyonnaise Au Gratin

Elevate your pasta game with the irresistible charm of Spaghetti Lyonnaise Au Gratin, a French-inspired comfort dish that redefines indulgence. This recipe combines perfectly al dente spaghetti with a rich, velvety béchamel sauce infused with the deep sweetness of caramelized onions. Topped generously with a golden, bubbling crust of Gruyère and Parmesan cheeses, this oven-baked masterpiece is the epitome of creamy, cheesy satisfaction. A dash of nutmeg adds a warm, aromatic touch, while fresh parsley provides a pop of color and freshness. Perfect as a hearty entrée or an elegant side, this baked spaghetti gratin promises to delight your taste buds and impress your guests. Simple yet sophisticated, it’s bound to become your go-to comfort food favorite.

Nutriscore Rating: 64/100

Prep Time:25 mins

Cook Time:30 mins

Total Time:55 mins

Servings: 4

Ingredients

• 400 grams spaghetti
• 3 medium yellow onions
• 50 grams butter
• 1 tablespoon olive oil
• 2 tablespoons all-purpose flour
• 500 milliliters milk
• 1 pinch nutmeg
• 1 teaspoon salt
• 1 teaspoon black pepper
• 150 grams Gruyère cheese
• 50 grams Parmesan cheese
• 1 tablespoon fresh parsley

Directions

Step 1

Bring a large pot of salted water to a boil. Cook the spaghetti until al dente according to the package instructions. Drain, toss with a drizzle of olive oil to prevent sticking, and set aside.

Step 2

Peel and thinly slice the onions. In a large skillet, heat the butter and olive oil over medium heat. Add the onions and cook for 15-20 minutes, stirring occasionally, until they are soft and caramelized. Season with a pinch of salt and set aside.

Step 3

Preheat your oven to 200°C (400°F).

Step 4

In a saucepan, prepare the béchamel sauce: Melt 30 grams of butter over medium heat, then stir in the flour. Cook for 1-2 minutes, stirring constantly, to create a roux. Gradually whisk in the milk, ensuring there are no lumps. Continue cooking, whisking constantly, until the sauce thickens. Stir in a pinch of nutmeg, salt, and black pepper. Remove from heat.

Step 5

Mix the caramelized onions into the béchamel sauce. Combine the sauce with the cooked spaghetti, ensuring the spaghetti is evenly coated.

Step 6

Grease a baking dish and transfer the spaghetti mixture into it. Evenly spread the grated Gruyère and Parmesan cheeses over the top.

Step 7

Bake in the preheated oven for 15-20 minutes or until the top is golden brown and bubbling.

Step 8

Garnish with freshly chopped parsley before serving.

Nutrition Facts

Serving size	(1537.3g)

Amount per serving	% Daily Value*
Calories	2409.5

Total Fat 133.3g	0%
Saturated Fat 69.9g	0%
Polyunsaturated Fat 5.5g
Cholesterol 373.4mg	0%
Sodium 4234.3mg	0%
Total Carbohydrate 195.3g	0%
Dietary Fiber 14.0g	0%
Total Sugars 43.9g
Protein 107.0g	0%

Vitamin D 270.9IU	0%
Calcium 2746.8mg	0%
Iron 9.1mg	0%
Potassium 1678.9mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 49.8%

Protein: 17.8%

Carbs: 32.4%