French Onion Mac and Cheese: The Ultimate Cozy Comfort Twist
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This baked French onion mac and cheese combines slow-caramelized onions with a creamy Gruyère-based cheese sauce and tender pasta. Pure comfort in every bite.
Total Time:1 hour 50 minutes
Yield:6 servings
Ingredients
4 large sweet onions, thinly sliced
3 tablespoons olive oil
1 pound short-cut pasta
3 tablespoons unsalted butter
1/4 cup all-purpose flour
2 1/2 cups whole milk
12 ounces Gruyère cheese, shredded
4 ounces Parmesan cheese, shredded
1/4 teaspoon ground nutmeg
1/3 cup seasoned breadcrumbs
Fresh thyme for garnish
Salt and pepper to taste
Instructions
Caramelize onions in olive oil over low heat, stirring often, for 60–90 minutes until golden brown.
Boil pasta until just shy of al dente. Drain and set aside.
In the same pan, melt butter, whisk in flour to make a roux, cook for 2–3 minutes.
Slowly add milk, whisking until smooth. Stir in nutmeg.
Add shredded cheeses to the sauce and stir until melted.
Fold in cooked pasta and 3/4 of the onions. Mix well.
Transfer mixture to baking dish. Top with remaining onions, breadcrumbs, and extra cheese.
Bake at 375°F for 25–30 minutes until bubbly and golden.
Let sit for 5–10 minutes before serving. Garnish with thyme.
Notes
Make ahead tip: Assemble fully, cover, and refrigerate up to 24 hours. Bake before serving.
Leftovers reheat well in the oven or microwave. Add a splash of milk to maintain creaminess.
