Can I use a different pasta shape?

Yes! Elbows are classic, but shells or cavatappi are amazing because they hold sauce like little edible cups. Just cook to al dente.

Can I make it ahead of time?

Totally. Assemble it, cover, and refrigerate. When ready to eat, bake at 350°F until hot (about 20–25 minutes ), then broil the top if you want that golden finish.

How do I store leftovers?

Keep leftovers in an airtight container in the fridge for 3–4 days . Reheat with a splash of broth or milk to bring the creaminess back.

Can I swap the cheeses?

Absolutely. Gruyère is classic, but Swiss works in a pinch. For cheddar, sharp is best—mild can get lost next to the onions.

What if I don’t have half-and-half or heavy cream?

Absolutely. Gruyère is classic, but Swiss works in a pinch. For cheddar, sharp is best—mild can get lost next to the onions.

What if I don’t have half-and-half or heavy cream?

You can use whole milk, but the sauce will be less rich. If you do milk, consider a little extra cheese to keep things creamy.

French Onion Soup Mac & Cheese: 5 Comforting, Irresistible Bites

Description

French onion soup mac & cheese is the ultimate cozy comfort food mashup. Sweet caramelized onions, rich broth, and melty Gruyère blend into a creamy cheese sauce that hugs every bite of pasta. Finished with a golden, bubbly top, this dish brings classic French onion flavor into an easy, family-friendly baked mac & cheese perfect for weeknights or special dinners.

Ingredients

Scale

3 large yellow onions, thinly sliced
3 tablespoons butter
2 cloves garlic, minced
3 tablespoons all-purpose flour
1 ½ cups beef broth (or vegetable broth)
1 cup half-and-half (or heavy cream)
1 ½ cups shredded Gruyère cheese
1 ½ cups shredded sharp white cheddar cheese
12 ounces elbow macaroni
½ teaspoon dried thyme
Salt and black pepper, to taste
½ cup toasted baguette slices or breadcrumbs (optional topping)
Extra shredded cheese for topping (optional)

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Instructions

Caramelize the onions:
In a large skillet or Dutch oven, melt butter over low heat. Add sliced onions and a pinch of salt. Cook slowly for 30–40 minutes, stirring occasionally, until deep golden and caramelized.
Add garlic:
Stir in minced garlic and cook for 30 seconds until fragrant.
Make the sauce base:
Sprinkle flour over the onions and stir well. Cook for 1 minute. Slowly whisk in broth, then cream, stirring until smooth and slightly thickened.
Add cheese:
Reduce heat to low. Stir in Gruyère and cheddar until fully melted and creamy. Add dried thyme, salt, and pepper to taste.
Cook pasta:
Meanwhile, boil elbow macaroni in salted water until al dente. Drain, reserving ¼ cup pasta water.
Combine:
Fold cooked pasta into the cheese sauce. Add a splash of reserved pasta water if needed to loosen the sauce.
Bake (optional but recommended):
Transfer to a greased baking dish. Top with extra cheese and toasted baguette slices or breadcrumbs. Broil for 1–3 minutes until golden and bubbly.
Serve:
Let rest 5 minutes before serving. Enjoy warm and melty.

Notes

Cook onions low and slow for best flavor—don’t rush this step.
Freshly grated cheese melts smoother than pre-shredded.
For extra depth, use beef broth; for vegetarian, use vegetable broth.
Leftovers reheat best with a splash of milk or broth stirred in.
You can prepare ahead and refrigerate before baking.

Prep Time: 15 minutes
Cook Time: 45 minutes
Category: Dinner
Method: Stovetop + Baked
Cuisine: American

Nutrition

Serving Size: 1 serving (about 1½ cups)
Calories: 620 kcal
Sugar: 6 g
Sodium: 620 mg
Fat: 36 g
Saturated Fat: 21 g
Unsaturated Fat: 13 g
Trans Fat: 0.5 g
Carbohydrates: 48 g
Fiber: 3 g
Protein: 24 g
Cholesterol: 105 mg