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top view black skillet of brown pasta with caramelized onions and mushrooms
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5 from 3 votes

French Onion Pasta

French Onion Pasta is filled with the wonderful flavors of the classic soup recipe, but in pasta form! Caramelized onions, mushrooms, garlic and fresh thyme are cooked with pasta and parmesan cheese for an amazing meal. This recipe is so easy to make and will please your whole family!
Prep Time10 minutes
Cook Time30 minutes
0 minutes
Total Time40 minutes
Course: Main Course
Cuisine: American, French
Diet: Gluten Free, Vegetarian
Servings: 4 servings
Author: Rena

Ingredients

  • 1 lb whole grain spaghetti or linguine or use gluten-free pasta
  • Kosher salt and pepper to taste
  • 2 tbsp olive oil
  • 2 large white onions thinly sliced
  • 1 lb button mushrooms thinly sliced
  • 4-6 garlic cloves sliced
  • ½ tbsp fresh thyme leaves
  • 2 tbsp balsamic vinegar
  • 1/2 cup beef stock or stock of choice
  • 1/2 cup ground parmesan cheese
  • Optional: 2 tbsp freshly chopped parsley

Instructions

  • Cook the pasta in salted water according to package directions. Reserve 1/2 cup of the pasta water, then drain.
  • Meanwhile, heat the oil in a Dutch oven or a rimmed skillet over medium heat.
  • Add the onion and sauté until mostly caramelized and golden, around 12-15 minutes, stirring occasionally.
  • Add the mushrooms and sauté for 3-4 minutes more. Add garlic, thyme and balsamic vinegar and cook for 1 minute more.
  • Add the stock and bubble until reduced by half.
  • Add in the cooked pasta and pasta water. Stir well together with the parmesan cheese. Serve while hot and enjoy!

Notes

Storage:
  • In the refrigerator: Transfer cooled pasta to an airtight container and store in the fridge for up to 5 days. 
  • To reheat: Leftovers can be reheated on the stove over low heat or in the microwave. You may need to add a small amount of broth, water or milk to moisten and loosen the noodles. 

Nutrition

Serving: 1serving | Calories: 598kcal | Carbohydrates: 98g | Protein: 23g | Fat: 13g | Saturated Fat: 3g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Cholesterol: 11mg | Sodium: 877mg | Potassium: 799mg | Fiber: 6g | Sugar: 9g | Vitamin A: 151IU | Vitamin C: 9mg | Calcium: 164mg | Iron: 3mg