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–+ servings
French onion pasta square

French Onion Soup Pasta Bake Recipe

If you're looking for a rich, cozy dish that tastes like it simmered all day but actually comes together with minimal effort, this French onion pasta bake is about to become your go-to recipe. Imagine the deep, savoury flavours of classic French onion soup - slow-cooked onions, beefy stock, melted cheese, wrapped around a bubbling, creamy pasta bake. It’s indulgent, satisfying and absolutely perfect for a chilly evening or when you just need a hug in dinner form.
5 from 1 vote
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Prep Time 10 minutes
Cook Time 1 hour 10 minutes
Course Main Course
Cuisine French
Servings 4
Calories 520 kcal

Equipment

  • Large baking dish
  • Large Pot
  • Cheese grater

Ingredients
  

  • 300 g pasta
  • 3 onions
  • 2 tablespoon olive oil
  • 5 g fresh thyme
  • 1 small garlic bulb
  • 150 ml beef stock
  • 2 tablespoon light crème fraiche 60ml, normal crème fraiche also works
  • 50 g Gruyère grated
  • 125 g mozzarella grated
  • 1 teaspoon sugar
  • 1 teaspoon mustard
  • 1 teaspoon Worcestershire sauce
  • Salt and pepper

Instructions
 

  • Start by preheating your oven to 200°C/ 400°F. Thinly slice your onions and toss them in a deep baking dish with olive oil, fresh thyme, a pinch of sugar, salt, and pepper. Nestle in a whole garlic bulb with the top cut off and outer layers removed. Cover the dish tightly with foil and bake for 40 minutes. Stir halfway through to ensure even caramelisation.
    3 onions, 2 tablespoon olive oil, 5 g fresh thyme, 1 small garlic bulb, Salt and pepper, 1 teaspoon sugar
  • After 40 minutes, remove the foil and take out the garlic bulb to cool slightly. Return the onions to the oven uncovered while you boil the pasta until just shy of al dente. This helps develop deeper colour and flavour in the onions.
    300 g pasta
  • Once the garlic is cool enough to handle, squeeze the soft cloves into the caramelised onions and mash gently. Add in the Worcestershire sauce, beef stock, mustard, and crème fraîche. Stir well to create a creamy, savoury base. Add in your cooked pasta and toss until everything is coated. Make sure some onions sit on top, they crisp up beautifully in the oven. Sprinkle over the grated Gruyère and mozzarella, then bake uncovered for 15 minutes until golden, bubbling, and irresistible.
    150 ml beef stock, 2 tablespoon light crème fraiche, 50 g Gruyère, 125 g mozzarella, 1 teaspoon mustard, 1 teaspoon Worcestershire sauce
  • Spoon generous portions of your French onion pasta bake into bowls and enjoy every rich, cheesy, melt-in-your-mouth bite.

Notes

Don't rush the onion roasting stage, it’s where the magic happens. Low and slow cooking allows the onions to release their natural sugars, creating that deep, sweet-savory base that defines French onion flavour. Stir halfway through and roast uncovered at the end for rich colour and jammy texture.

Nutrition

Calories: 520kcalCarbohydrates: 56gProtein: 17gFat: 25g
Keyword easy pasta bake, french onion pasta, french onion pasta bake, french onion pasta recipe, french onion soup, french onion soup pasta, pasta bake
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