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Creamy One Pot French Onion Pasta in a bowl garnished with thyme and breadcrumbs, warm and inviting

One Pot French Onion Pasta

This One Pot French Onion Pasta is a time-saving comfort food that combines creamy pasta with the rich flavors of caramelized onions and mushrooms. This quick and easy recipe is perfect for busy nights, providing delicious results with minimal effort.
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Prep Time 10 minutes
Cook Time 50 minutes
Total Time 1 hour
Servings: 4 servings
Course: Main Course
Cuisine: French
Ingredients Method Notes

Ingredients
  

  • 1/4 cup olive oil
  • 3 yellow onions thinly sliced
  • 4 garlic cloves minced
  • 8 oz cremini mushrooms sliced
  • 1 tbsp fresh thyme
  • 2 tbsp all-purpose flour
  • 2 cups beef broth (or vegetable broth)
  • 2 cups water
  • 12 oz dried orecchiette or another short-cut pasta
  • 1 tbsp sherry vinegar
  • Salt and freshly ground black pepper to taste
  • Fresh herbs and toasted breadcrumbs for serving (optional)

Method
 

  1. Heat olive oil in a large skillet over medium heat. Add the onions and a generous pinch of salt when the oil shimmers. Stir frequently, cooking for 25–30 minutes until the onions become deeply caramelized and golden brown.
  2. Stir in the garlic, mushrooms, and thyme. Sauté for 3–4 minutes or until the mushrooms soften slightly.
  3. Sprinkle the flour over the mixture, stirring well to coat. Cook for another 2–3 minutes to eliminate the raw flour taste.
  4. Pour in the broth and water, stirring until combined. Season the mixture with salt and pepper to your liking.
  5. Bring the liquid to a boil, then add the pasta. Cook for 8–10 minutes, stirring occasionally, until the pasta is al dente and has absorbed most of the liquid. (Cooking times may vary depending on the pasta shape.)
  6. Turn off the heat and stir in the sherry vinegar for a tangy, bright finish.
  7. Serve warm with fresh herbs, toasted breadcrumbs, or even a sprinkle of Parmesan if desired.

Notes

Prep ahead: Slice your onions and mushrooms the night before to save time. Get the caramelization right: Don’t rush the onion-cooking process—they should be golden brown but not burned! Watch the liquid amounts: Add an extra splash of water if the pasta absorbs too much broth before cooking through. Make it extra rich: Stir in a splash of heavy cream or top with gruyere cheese for a nod to French onion soup. Store leftovers smartly: Keep leftovers in an airtight container for up to 3 days, and reheat on the stove with a splash of broth to revive the sauce.