Make One-Pot French Onion Pasta with caramelized onions, mushrooms, thyme, and vegetable broth, then finish it with sherry vinegar for a rich, savory flavor. Give it a try tonight!
One-Pot French Onion Pasta cooks dried orecchiette right in a flavorful vegetable broth built on slow-caramelized onions, mushrooms, and thyme. A spoonful of sherry vinegar goes in at the end for a tangy finish.
If you love the deep, savory flavor of French onion soup, this one-pot French onion pasta brings it to the dinner table in pasta form. Heads-up: the onions need 25 to 30 minutes of frequent stirring to caramelize, so read through the steps before you start.
Table of Contents
Reasons to Make One-Pot French Onion Pasta
- Slow-cooked depth: Caramelized onions, thyme, and vegetable broth build a rich, savory base that carries flavor through the whole pot.
- Meaty mushrooms: Sliced cremini add an earthy bite alongside the soft onions.
- Al dente texture: The pasta finishes cooking in the sauce, so each piece stays pleasantly firm to the bite.
- Broth, your way: The recipe works with beef broth or vegetable broth, so you can use whichever you have.
- Toppings optional: Fresh herbs and toasted breadcrumbs are there if you want a little extra crunch and color on top.
One-Pot French Onion Pasta: Deeply Caramelized Onions
Equipment
- Large skillet
- Wooden spoon or spatula
- Cutting board
- Chef’s knife
- Measuring cups and spoons
- Food thermometer (for reheating)
- Covered containers
Ingredients
Base
- ¼ cup olive oil for cooking the onions
- 3 yellow onions thinly sliced; cooked until deeply caramelized
- 4 cloves garlic minced; added with the mushrooms
- 8 oz cremini mushrooms sliced; cooked until they begin to soften
Seasonings
- 1 tbsp fresh thyme added with the garlic and mushrooms
- salt and freshly ground black pepper to taste; a pinch of salt also goes in with the onions
Sauce
- ½ cup vegetable broth for deglazing; lifts the browned bits from the bottom (or a splash of apple cider vinegar mixed with water)
- 2 tbsp all purpose flour added after deglazing to thicken
- 2 cups beef broth or vegetable broth either broth works
- 2 cups water added along with the broth
Pasta
- 12 oz dried orecchiette or other short cut pasta cooks right in the pan
Finish
- 1 tbsp sherry vinegar stirred in once the heat is off
Topping
- fresh herbs and toasted breadcrumbs for serving, optional
Instructions
- Heat the olive oil in a large skillet over medium heat. When it’s shimmering, add the onions and a generous pinch of salt. Cook, stirring frequently, until deeply caramelized, about 25 to 30 minutes. Good to Know: Shimmering oil looks like it’s rippling on the surface. Caramelized onions are cooked slowly until soft and deeply browned.
- Add the garlic, mushrooms, and thyme. Sauté for 3 to 4 minutes, or until the mushrooms begin to soften.
- Deglaze the pan with the vegetable broth, or a splash of apple cider vinegar mixed with water, then add the flour. Cook for another 2 to 3 minutes, until thickened. Good to Know: Deglazing means pouring liquid into a hot pan to loosen the browned bits stuck to the bottom.
- Pour in the beef broth (or vegetable broth) and water. Season with salt and freshly ground black pepper.
- Bring to a boil, then add the pasta and cook for 8 to 10 minutes, or until al dente. Good to Know: Al dente pasta is cooked through but still a little firm to the bite. Other pasta shapes have different cook times than orecchiette.
- Turn off the heat and stir in the sherry vinegar. Serve warm, topped with fresh herbs and toasted breadcrumbs if you’d like.
Notes
Ingredients You’ll Need for One-Pot French Onion Pasta
| Category | Ingredient | Measurement | Quick Note |
|---|---|---|---|
| Base | Olive oil | 1/4 cup | For cooking the onions |
| Base | Yellow onions | 3, thinly sliced | Cooked until deeply caramelized |
| Base | Garlic cloves | 4, minced | Added with the mushrooms |
| Base | Cremini mushrooms | 8 oz, sliced | Cooked until they begin to soften |
| Seasonings | Fresh thyme | 1 tbsp | Added with the garlic and mushrooms |
| Seasonings | Salt and freshly ground black pepper | To taste | A pinch of salt also goes in with the onions |
| Sauce | Vegetable broth | 1/2 cup | Used to deglaze the pan and lift the flavorful browned bits from the bottom. |
| Sauce | All purpose flour | 2 tbsp | |
| Sauce | Beef broth, or vegetable broth | 2 cups | Either broth works |
| Sauce | Water | 2 cups | Added along with the broth |
| Pasta | Dried orecchiette or other short cut pasta | 12 oz | Cooks right in the pan |
| Finish | Sherry vinegar | 1 tbsp | Stirred in once the heat is off |
| Topping | Fresh herbs and toasted breadcrumbs | For serving, optional | Entirely optional |
Shopping tip: The yellow onions are the star, so buy three and slice them thinly. Pick the broth you like best, since it forms the base of the sauce. Orecchiette is what the recipe uses, though any short cut pasta works, with cook times that vary by shape.
Making One-Pot French Onion Pasta, Step by Step
- Heat the olive oil in a large skillet over medium heat. When it’s shimmering, add the onions and a generous pinch of salt. Cook, stirring frequently, until deeply caramelized, about 25 to 30 minutes.
Good to Know: Shimmering means the oil looks like it’s rippling on the surface, and caramelized onions are cooked slowly until they’re soft and deeply browned.
- Add the garlic, mushrooms, and thyme. Sauté for 3 to 4 minutes, or until the mushrooms begin to soften.
- Deglaze the pan with vegetable broth or a splash of apple cider vinegar mixed with water, then add the flour. Cook for another 2 to 3 minutes, until thickened.
Good to Know: Deglazing means pouring liquid into a hot pan so it loosens the browned bits stuck to the bottom.
- Pour in the beef broth (or vegetable broth) and water. Season with salt and freshly ground black pepper.
- Bring to a boil, then add the pasta and cook for 8 to 10 minutes, or until al dente.
Good to Know: Al dente means the pasta is cooked through but still a little firm when you bite it, and other pasta shapes will have different cook times than orecchiette.
- Turn off the heat and stir in the sherry vinegar. Serve warm, topped with fresh herbs and toasted breadcrumbs if you’d like.
Helpful Tips for Making One-Pot French Onion Pasta
Little Things That Make a Big Difference
- Prep first: Slice the onions and mushrooms and mince the garlic before you heat the oil, since the onions need frequent stirring once they’re in the pan.
- Use a large skillet: The pasta, broth, and water all cook in the same pan, so choose one with plenty of room.
- Taste at 8 minutes: Check a piece of pasta at the low end of the cooking range, then give it up to 10 minutes if it’s still too firm.
- Vinegar goes in last: Stir in the sherry vinegar only after the heat is off, just as the recipe is written.
Easy Twists
- Optional broth swap: Use vegetable broth in place of beef broth. The rest of the recipe stays the same.
- Optional pasta swap: Use another short cut pasta instead of orecchiette, and watch the pot, because cook times differ from shape to shape.
- Optional toppings: Finish each bowl with fresh herbs, toasted breadcrumbs, or both.
If Something Goes Wrong
If the onions aren’t deeply caramelized after about 25 minutes, then keep cooking and stirring frequently. The recipe gives 25 to 30 minutes as a guide.
If the mushrooms haven’t started to soften after 3 to 4 minutes, then keep sautéing until they begin to soften.
If the sauce hasn’t thickened after the flour goes in, then keep cooking it, stirring, until it’s thickened. That stage usually takes 2 to 3 minutes.
If you used a pasta other than orecchiette, then expect a different cook time and taste for al dente rather than relying on the 8 to 10 minute range.
How Long Does One-Pot French Onion Pasta Keep?
| Method | Keeps For | Tips |
|---|---|---|
| Refrigerator | 3 to 4 days | Refrigerate within two hours of serving, in a covered container. Smaller containers help leftovers cool faster. |
| Freezer | 3 to 4 months | This recipe doesn’t include freezing instructions, so this is the general guideline for leftovers. |
These timings follow the leftovers guidance in the University of Illinois Extension leftovers guide.
When reheating, bring leftovers to 165°F, measured with a food thermometer. Cover them while they heat to help hold in moisture. Reheating time depends on how much you have, so rely on the thermometer instead of a timer.
Your One-Pot French Onion Pasta Questions
Can I use vegetable broth in One-Pot French Onion Pasta?
Yes. The recipe calls for 2 cups of beef broth or vegetable broth, so use whichever you prefer.
What kind of pasta works best?
The recipe uses 12 oz of dried orecchiette, but any other short cut pasta works too. Just keep in mind that different shapes have different cook times.
How long do the onions take to caramelize?
About 25 to 30 minutes over medium heat, stirring frequently, until they are deeply caramelized. Add a generous pinch of salt when the onions go into the pan.
When do I add the sherry vinegar?
Right at the end. Once the pasta is al dente, turn off the heat, stir in 1 tbsp of sherry vinegar, and serve warm.
What can I put on top?
The recipe lists fresh herbs and toasted breadcrumbs for serving. Both are optional.
Time to Cook
Grab a big skillet and a few onions, and give this one a go. Once it’s on your table, leave a star rating or a comment below so other cooks know how it turned out. Then save it to your Pinterest board for the next time you want it.
Hungry for more? Try this 4-ingredient frozen lemon pasta, macarona bil laban, or Mississippi pot roast.
Save this One-Pot French Onion Pasta for a night when you want dinner cooked in a single skillet. Orecchiette simmers in a rich onion, mushroom, and vegetable broth with a splash of apple cider vinegar or extra sherry vinegar for depth of flavor, then gets a sherry vinegar finish. Pin it for later!
