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French Onion Soup Mac & Cheese

French onion soup mac & cheese

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Indulge in the comforting flavors of French onion soup mac & cheese, a delightful fusion of creamy pasta and savory caramelized onions. This gourmet dish elevates classic comfort food with layers of rich Gruyère and sharp cheddar cheeses, enveloping al dente macaroni in a silky sauce. Perfect for cozy dinners or special gatherings, this recipe is designed to impress with its harmonious blend of flavors and textures. Whether served as a main course or a side dish, it’s sure to please even the pickiest eaters. Plus, it can be prepared ahead of time, making it a convenient option for busy weeknights.

Ingredients

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  • 3 large yellow onions
  • 12 oz elbow macaroni
  • 4 cups beef broth (or vegetable broth)
  • 1 cup half-and-half
  • 1 ½ cups grated Gruyère cheese
  • 1 cup sharp white cheddar cheese
  • 3 tbsp butter
  • 2 cloves garlic, minced
  • 1 tsp dried thyme
  • 1 tsp salt
  • ½ tsp freshly ground black pepper
  • 3 tbsp all-purpose flour

Instructions

  1. In a cast iron skillet, melt butter over low heat. Add sliced onions and cook for 30–40 minutes until they are golden brown and sweet.
  2. Sprinkle flour over the caramelized onions; stir well to coat. Gradually whisk in beef or vegetable broth along with half-and-half until smooth.
  3. Stir in minced garlic and dried thyme, then melt in Gruyère and sharp white cheddar cheeses until creamy; season with salt and pepper.
  4. Boil elbow macaroni according to package instructions until al dente; drain well.
  5. Combine cooked macaroni with the cheese sauce until fully coated.
  6. Transfer to an oven-safe baking dish, top with extra grated cheese, and broil briefly until bubbly and golden brown.

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