How to make French Onion Soup Mac & Cheese
Ingredients:
- 3 large yellow onions, thinly sliced
- 2 tbsp butter
- 1 tbsp olive oil
- 2 cloves garlic, minced
- 8 oz elbow macaroni
- 2 cups shredded Gruyère cheese
- 1 cup shredded mozzarella cheese
- 2 cups chicken or vegetable broth
- 1 cup heavy cream
- Salt and pepper to taste
- Fresh thyme or parsley for garnish (optional)
Directions:
- In a large skillet, heat the butter and olive oil over medium heat.
- Add the sliced onions and cook, stirring occasionally, until they become soft and translucent, around 10 minutes.
- Add the minced garlic and continue to cook, stirring, until the onions are caramelized and golden brown, about 20-30 minutes.
- Season the cooked onions with salt and pepper to taste. Set them aside.
- In a large pot, bring salted water to a boil and cook the elbow macaroni according to package instructions until al dente. Drain and set aside.
- In the same pot, add the caramelized onions, chicken or vegetable broth, and heavy cream. Cook over medium heat until warmed through.
- Stir in the cooked macaroni, Gruyère, and mozzarella cheeses, mixing well to combine. Cook until the cheese is melted and creamy.
- Serve hot, garnished with fresh thyme or parsley if desired.
Why You’ll Love This French Onion Soup Mac & Cheese
French Onion Soup Mac & Cheese is a delightful dish that combines two classic favorites into one delicious meal. The richness of the creamy cheese pairs perfectly with the deep, caramelized flavor of the onions. Each bite is a warm hug on a plate, making it an ideal comfort food for cold nights or casual gatherings. The blend of Gruyère and mozzarella provides a delightful stretch, which makes this dish visually appealing as well as appetizing.

Nutritional Benefits
French Onion Soup Mac & Cheese packs a variety of nutrients. Onions are known for their antioxidant properties and can support heart health. The dish also contains dairy, which provides calcium and protein. Choosing whole-grain macaroni can offer additional fiber, helping to support digestion. If you add some greens to the side, like a simple salad, you can enhance the nutritional value even more.
What to Serve With French Onion Soup Mac & Cheese
This creamy dish pairs well with various sides. Here are some suggestions:
| Side Dish | Description |
|—————————|———————————–|
| Simple Green Salad | A refreshing mix with vinaigrette |
| Garlic Bread | For extra crunch and flavor |
| Steamed Vegetables | Such as broccoli or green beans |
| Crispy Roasted Potatoes | To complement the creaminess |
How to Store French Onion Soup Mac & Cheese
If you have leftovers, it’s easy to store this dish. Allow it to cool completely before transferring it to an airtight container. You can store it in the refrigerator for up to 3 days. When you’re ready to eat, simply reheat in the microwave or on the stovetop, adding a splash of cream or broth to help loosen it up.
Tips and Mistakes to Avoid
- Don’t Rush the Onions: Caramelizing onions takes time. Cooking them too quickly can make them burnt instead of sweet and golden.
- Use Quality Cheese: Investing in good-quality cheeses like Gruyère will elevate the flavor. Avoid pre-shredded cheese as it contains anti-caking agents that can affect the creaminess.
- Watch Your Macaroni: Ensure you don’t overcook the macaroni. It should be al dente, as it will continue to cook in the cheese sauce.
- Season Sparingly: Be careful with salt until you taste the finished dish. The cheeses can add a lot of saltiness already.
Variations
There are several fun twists you can take with this recipe:
- Add Protein: Incorporate cooked chicken or sausage for added protein.
- Make it Vegetarian: Use vegetable broth for a vegetarian option and explore adding mushrooms for extra flavor.
- Change the Cheese: Experiment with different cheeses like sharp cheddar or fontina for unique flavors.
FAQs
Can I make this dish ahead of time?
Yes, you can prepare the macaroni and cheese without baking it. Assemble everything, cover it, and refrigerate. When you’re ready to eat, bake it straight from the fridge, adding extra time to ensure it’s heated through.
Can I freeze French Onion Soup Mac & Cheese?
Yes, you can freeze this dish. Store it in a freezer-safe container for up to three months. When you want to enjoy it, let it thaw in the refrigerator overnight and then reheat.
How can I make this dish spicier?
To add some heat, consider incorporating crushed red pepper flakes or diced jalapeños into the cheese mixture for a spicy kick.
With these steps and tips, you can enjoy a delightful, comforting bowl of French Onion Soup Mac & Cheese that’s sure to please everyone at your table!

French Onion Soup Mac & Cheese
Ingredients
Onions
- 3 large large yellow onions, thinly sliced
Fats
- 2 tbsp butter
- 1 tbsp olive oil
Aromatics
- 2 cloves garlic, minced
Pasta
- 8 oz elbow macaroni
Cheeses
- 2 cups shredded Gruyère cheese
- 1 cup shredded mozzarella cheese
Liquids
- 2 cups chicken or vegetable broth
- 1 cup heavy cream
Seasoning
- Salt and pepper to taste
- Fresh thyme or parsley for garnish (optional)
Instructions
Caramelizing Onions
- In a large skillet, heat the butter and olive oil over medium heat.
- Add the sliced onions and cook, stirring occasionally, until they become soft and translucent, around 10 minutes.
- Add the minced garlic and continue to cook, stirring, until the onions are caramelized and golden brown, about 20-30 minutes.
- Season the cooked onions with salt and pepper to taste. Set them aside.
Cooking Pasta
- In a large pot, bring salted water to a boil and cook the elbow macaroni according to package instructions until al dente. Drain and set aside.
Combining Ingredients
- In the same pot, add the caramelized onions, chicken or vegetable broth, and heavy cream. Cook over medium heat until warmed through.
- Stir in the cooked macaroni, Gruyère, and mozzarella cheeses, mixing well to combine.
- Cook until the cheese is melted and creamy.
- Serve hot, garnished with fresh thyme or parsley if desired.