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french onion mac and cheese
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French Onion Mac & Cheese

French Onion Mac & Cheese has a rich, cheesy sauce of classic mac and cheese and a flavor boost of sweet, caramelized onions, reminiscent of French onion soup.
Prep Time10 minutes
Cook Time30 minutes
Total Time40 minutes
Course: Main Course, Side Dish
Cuisine: American
Keyword: Cheese, Onion, Pasta
Servings: 4 Servings
Calories: 733kcal

Ingredients

  • 5 tablespoons butter divided
  • 1 medium yellow onion thinly sliced
  • 1 clove garlic minced
  • 1/4 teaspoon salt
  • 2 teaspoon fresh thyme leaves chopped
  • 2 tablespoons dry sherry or white wine
  • 2 tablespoons beef stock
  • 1 teaspoon Worcestershire sauce
  • 8 ounces uncooked pasta shells
  • 1 1/2 cups whole milk
  • 1/4 cup all-purpose flour
  • 1 cup shredded sharp cheddar cheese
  • 1 1/2 cups shredded gruyere or mozzarella
  • 1/4 cup crispy onions
  • OR
  • 1 shallot sliced thinly and 2 tablespoons neutral cooking oil

Instructions

  • In a skillet over low heat, add the onions and 1/4 cup of water. Cook until the water has evaporated, about 5 minutes. Add in 2 tablespoons butter, garlic, salt and thyme. Cook for about 15 minutes, until the onions are caramelized.
  • Bring a large pot of salted water to a boil. Add the pasta and cook for 1 minute less than the package instructs.
  • Turn up the heat on the onions to medium high. Add sherry or wine to the pan and cook for about 1 minute. Add the beef stock and Worcestershire sauce.
  • Add in the remaining butter. As it melts, add in the flour and whisk until combined. Cook for 1 minute, stirring constantly.
  • Slowly whisk in the milk, stirring constantly to avoid lumps. Cook for about 2-3 minutes, until slightly thickened.
  • Add in the cheddar and mozzarella. Stir until they are melted and the sauce is smooth.
  • Add the pasta directly from the pot, along with a little pasta water, if necessary to smooth out the sauce. Taste and season with salt to suit your preference.
  • Top with crispy onions or make your own.

For the crispy onions:

  • To make your own crispy onions, combine the shallots and cooking oil in a skillet over medium heat. Turn them over occasionally while cooking. Cook until they are a golden color, about 6-8 minutes. Drain on a paper-towel-lined plate.

Video

Notes

  • Don’t rush the caramelization process for the mac and cheese. Cooking them on low heat allows the natural sugars to develop and bring out a deep, sweet flavor.
  • Use a combination of Mozzarella and sharp cheddar for the mac and cheese to get that perfect balance of creaminess and bold flavor.
  • Save some of the pasta water to thin out the cheese sauce if it gets to thick.
  • When making the crispy onions watch them as they start to get golden brown. They can go from perfect to burned in a minute.

Nutrition

Calories: 733kcal | Carbohydrates: 63g | Protein: 29g | Fat: 40g | Saturated Fat: 23g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 9g | Trans Fat: 1g | Cholesterol: 114mg | Sodium: 711mg | Potassium: 496mg | Fiber: 3g | Sugar: 11g | Vitamin A: 1252IU | Vitamin C: 6mg | Calcium: 600mg | Iron: 2mg