French Onion Mac and Cheese

There’s just something about having friends over, burgers on the grill, and a side dish that feels a little extra special 🤍

I made this French Onion Mac & Cheese for a night with friends, and it completely elevated the whole meal. It’s rich, creamy, and has that deep, savory flavor from the French onion soup—plus the crispy topping takes it over the top.

And the best part? It’s still incredibly easy.

This is one of those recipes that makes people think you spent way more time in the kitchen than you actually did… and I’m always here for that.

Why You’ll Love This Recipe

• Uses simple, pantry-friendly ingredients
• Feels elevated but is still easy to make
• Perfect side for burgers, BBQ, or hosting
• Creamy + crispy = the best texture combo
• Great for feeding a crowd

Ingredients

• 1 16 oz box macaroni noodles (cooked and drained)
• 3 tbsp butter
• 3 tbsp flour
• 1 can French onion soup
• 1 ½ cups milk
• ½ cup heavy whipping cream
• 1 cup Parmesan cheese
• 1 ½ cups shredded mozzarella cheese

Topping:

• Breadcrumbs (light sprinkle)
• French fried onions

Instructions

• Preheat oven to 350°F.
• Cook pasta according to package directions. Drain and set aside.
• In a large saucepan, melt butter over medium heat.
  Stir in flour and cook for 1–2 minutes to create a roux.
• Slowly whisk in:

• • French onion soup
  • Milk
  • Heavy cream

• Continue whisking until smooth and slightly thickened.
• Stir in:

• • Parmesan cheese
  • Mozzarella cheese

• Mix until melted and creamy.
• Add cooked noodles to the cheese sauce and stir to combine.
• Pour everything into a greased casserole dish.
• Top with breadcrumbs and French fried onions for that crispy finish.
• Bake at 350°F for 30 minutes, until hot and bubbly.

• Tips for the Best Mac & Cheese

  • Want even more flavor? Swap in Gruyère or Swiss cheese
  • Broil for the last 2–3 minutes for an extra crispy topping
  • Add caramelized onions or leftover shredded beef to make it a full meal
  • Make ahead and refrigerate before baking for easy hosting prep

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  What to Serve With It

  This pairs perfectly with:

  • Grilled burgers
  • BBQ chicken
  • Hot dogs for a casual get-together
  • A simple side salad to balance the richness

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  Final Thoughts

  If you’re looking for a simple way to upgrade your mac & cheese, this is it.

  It’s cozy, crowd-pleasing, and just a little bit fancy—but still easy enough for any night of the week.

  And honestly… once you add that crispy topping, there’s no going back.