Our recipes, your inbox. Sign up

Portobello French Dip with Horseradish Aioli

40 reviews / 5 average

Roasty portobello strips, aureate caramelized onions, broiled Provolone cheese, active horseradish aioli, all accumulated on a warm, abrupt roll.

This compound is allotment of our Plant-Powered January series! Find out more about how to accompany in on the fun, or click here to assurance up anon for our email account to accept account meal plans, grocery lists, and added resources.

It’s adamantine to call how abundant there is to adulation about these sandwiches, but I’ll try:

Crunchy, buttery, broiled aliment is activity to accommodated up with broiled steak-seasoned portobello strips, candied and aureate caramelized onions, a area of broiled Provolone, and a big blubbery apply of horseradish aioli…

And again aloof back you anticipate it can’t alike get any better, that accomplished admirable crispy, saucy, aureate sandwich gets dunked in a abundantly savory, no-meat-necessary, au jus dipping sauce.

Ingredients for portobello french dip.

It is wonderful, it is meatless, it is the apotheosis of abundance food.

Dipping portobello french dip into au jus.

Watch How To Accomplish This Recipe:

French dips are a blazon of sandwich that commonly accommodate beef, onions, and cheese (also alleged beef dips) and their brand is that they get biconcave in an au jus (brothy affectionate of sauce). According to this nice little history of French dips, they are an American invention, but they’re alleged French due to the blazon of aliment usually used.

Common Questions About French Dips

What can I acting for Worcestershire sauce?

You can use vegan Worcestershire booze or acting soy sauce.

What can I use instead of white wine?

You could add a little bit of baptize instead.

How can I accomplish this gluten-free?

We’d advance application gluten-free Worcestershire sauce, tamari or attic aminos in abode of soy sauce, and application a gluten-free baguette or roll.

clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Portobello French Dip with Horseradish Aioli

  • Author: Lindsay
  • Absolute Time: 45 minutes
  • Yield: 4 mega sandwiches 1x


These Portobello French Dips are about to change your life! Roasty portobello strips, aureate caramelized onions, broiled Provolone cheese, active horseradish aioli, all accumulated on a warm, abrupt roll.



Roasted Mushrooms

  • 4 portobello augment caps, broken into attenuate strips
  • 23 tablespoons olive oil
  • 12 teaspoons Montreal steak seasoning (or aloof a baptize of alkali and pepper)

Caramelized Onions and Au Jus

  • 2 tablespoons butter
  • 1 large onion, agilely sliced
  • 1/4 cup white wine
  • 1 tablespoon Worcestershire (omit for vegetarian / vegan)
  • 1 tablespoon soy sauce 
  • 2 cups beef or vegetable broth
  • salt, pepper, and a compression of sugar to taste

Horseradish Aioli

  • 1/2 cup mayo
  • 1 teaspoon horseradish
  • 1 abysm garlic, grated
  • pinch of salt

French Dip Essentials

  • 4 abrupt sourdough rolls, or a baguette cut into 4 sections 
  • Provolone cheese slices


  1. Roast the Mushrooms: Preheat oven to 450 degrees. Bung augment slices with oil and seasoning. Buzz for 20-30 minutes. 
  2. Caramelize the Onions: Meanwhile, cook the adulate in a ample bucket over average heat. Add onions; saute until softened, again about-face the calefaction bottomward to caramelize the onions for 20 account or so, active occasionally until they are abysmal aureate brown.
  3. Make the Au Jus: Add the wine to the onions in the pan. Let it broil out. Add the Worcestershire and soy sauce. Add the broth. Simmer until bargain slightly. Cull out the onions with tongs and set aside. Division the au jus to taste.
  4. Toast the French Dips: Adulate the aliment if you want. Accumulation mushrooms on the bread. Awning with cheese. Acknowledgment to the oven on the aforementioned baking pan for about 5 account (enough to acknowledgment the aliment and cook the cheese). 
  5. Feast: Top the sandwiches with caramelized onions. Accord em anniversary a atom of horseradish aioli. Serve with the au jus for dipping! ANGELIC MOLY that’s good.


  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Sandwich
  • Method: Oven
  • Cuisine: American

Keywords: portobello mushrooms, french dip, vegetarian sandwich, caramelized onions

Recipe Agenda powered by Tasty Recipes logo

Time To Appearance You Off!

One Added Thing!

This compound is allotment of our accumulating of delicious augment recipes. Analysis it out!

Leave a Acknowledgment

Your email abode will not be published. Appropriate fields are apparent *

Recipe rating


  1. Pinch of Yum Logo

    Oh my gosh, I accept been talking for the aftermost few weeks about actuality bromidic with my cooking. This is ABSOLUTELY what I bare to get cool aflame about a meal and out of my rut! I cannot delay to accomplish these – YUM!!

  2. Pinch of Yum Logo
    Cricket Cooper

    OK, it’s almost accomplished breakfast time, and I am drooling for one of these!!!

    Adding a stop at the bounded grocery to my account today, to snag those mushrooms and some bread… ACKNOWLEDGE YOU!

  3. Pinch of Yum Logo

    What do you band your baking area with in the video. ( It isn’t aloof block paper.)

    1. Pinch of Yum Logo
      Krista @ Compression of Yum

      Hi Dale! It doesn’t attending like we’ve acclimated any lining on the baking sheets. It could be the texture/pattern of the baking area that you’re seeing.

  4. Pinch of Yum Logo

    I aloof fabricated these and they are excellent. They were accessible and so accomplishing to eat. Acknowledge you…..

    1. Pinch of Yum Logo
      Krista @ Compression of Yum

      It absolutely adds a nice affluent flavor, but you could aloof use added borsch instead!

  5. Pinch of Yum Logo

    Another amazing recipe. This is absolutely soooooo good. I acclimated angel cider alkali back I didn’t accept any white wine laying around. It was great!! Acknowledge you for all of your recipes.

  6. Pinch of Yum Logo

    This was so amazing! My 6 year old and 4 year old kept allurement for bites so I had to accomplish them their own, and my 4 year old accomplished and told me he would eat these everyday! Got them to eat veggies after allurement them to finish!

    1. Pinch of Yum Logo
      Krista @ Compression of Yum

      Such a win, Karen! 🎉 Acknowledgment so abundant for the comment!

  7. Pinch of Yum Logo

    Made this as anon as I saw it! It was SO good. It was absurd to eat, in the best accessible way. Accessible and quick abundant to accomplish on a weeknight. My abandoned annoyance was afterwards baking the mushrooms, I had no area abreast abundant for 2, let abandoned 4 sandwiches. I acclimated four appealing appropriate sized portobello mushrooms. But they diminished SO much. I concluded baking a agglomeration of white mushrooms to be able accomplish up abundant for two sandwiches. But contrarily it was a abundant meal!

    1. Pinch of Yum Logo
      Krista @ Compression of Yum

      Great feedback, Hilary. Acknowledgment so abundant for advertisement back!

    2. Pinch of Yum Logo

      I anticipation these were soooo adorable but I had a agnate affair area I absolutely broiled 6 portobello caps and alone had abundant for 2 sandwiches because they diminished up so abundant in the oven. I was so aghast because I was reaaally attractive advanced to a extra sandwich!! 🙂 it was yummy!!

      1. Pinch of Yum Logo
        Krista @ Compression of Yum

        Glad you enjoyed the recipe! And acknowledgment so abundant for the feedback, Megan!

        1. Pinch of Yum Logo

          This was SO good! I additionally accede with added commenters that the mushrooms not actuality abundant for four sandwiches. Two sandwiches was actual bushing for two bodies but would accept admired to accept had leftovers.

  8. Pinch of Yum Logo

    Made these aftermost night, so satisfying, alike my cannibal bedmate admired them! Abutting time I will allotment the portobellos a bit thicker so they don’t compress bottomward as abundant and bake the aliment afore the footfall of melting the cheese over the mushrooms. Fabricated a additional accumulation with shiitake mushrooms and it was additionally delicious. Acknowledge you!!

    1. Pinch of Yum Logo
      Krista @ Compression of Yum

      Oooh shiitakes complete wonderful! So animated you and your bedmate enjoyed the sandwiches!

  9. Pinch of Yum Logo

    This compound was amazing! I fabricated it for cafeteria today and I will absolutely be authoritative this a allotment of my account routine.

  10. Pinch of Yum Logo

    Made this tonight and it was soooooo good!!
    Thank you for this, a abundant another to beef.

  11. Pinch of Yum Logo
    Carolyn W

    Made a appropriate stop at the grocery abundance to get the capacity and fabricated this tonight. So freaking delicious!

  12. Pinch of Yum Logo

    Made these aftermost night and they were AMAZING! My husband, who has to accept meat with every meal, inhaled them and said we charge to accept them afresh soon! I agree, I didn’t accept abundant mushrooms but I will absolutely accomplish afresh and again! Aggregate I’ve fabricated from your armpit accept been delicious! Abundant Recipe! Acknowledge you!

  13. Pinch of Yum Logo

    This is candidly one of the best sandwiches I’ve anytime had in my life. All of the acidity you could dream of but none of the abundant meat feelings.

  14. Pinch of Yum Logo

    I never saw this on the card at the bounded Italian restaurant back I was growing up in Brooklyn. We had meatball Parmesan sandwiches, broiled ziti, broiled lasagna, spaghetti and meatballs, eggplant Parmesan subs, and garlic knots. But I don’t anamnesis seeing portobello augment Parmesan sandwiches. This absolutely looks acceptable and gives addition a like to anticipate about in authoritative a bootleg portobello augment Parmesan sandwich with amazon sauce. Absolutely looks adorable to me! 🙂

    1. Pinch of Yum Logo
      Krista @ Compression of Yum

      We adulation area you’re activity with the augment parm sandwich idea! If you accord this one a try, we achievement you adulation it!

  15. Pinch of Yum Logo

    I fabricated this for banquet tonight. Aloof delicious….I heard aural yum sounds from my bedmate as he ate.

  16. Pinch of Yum Logo

    Made this for cafeteria today! That jus was jus-t perfect. OMG I can’t appetite to accomplish it again. The mushrooms are abundantly delicious!!!

    1. Pinch of Yum Logo
      Krista @ Compression of Yum

      Thanks for giving the compound a try! We’re so blessed you enjoyed it!

  17. Pinch of Yum Logo

    This is now my best admired compound on Compression of Yum (which is a huge account accustomed the actuality I was basically the Falafel-Veggie-Naanwich Agent and about handed that compound out as flyers to anyone and everyone). SO aged and easy! 5-stars is an understatement!

  18. Pinch of Yum Logo

    I fabricated this tonight, and it was delicious! I cut the portobello into added strips and acclimated added mushrooms, as per the added comments. The horseradish aioli was a nice accession too!

  19. Pinch of Yum Logo

    OH MY GOSH. I’m an omnivore and this was easily bottomward the best French dip sandwich I’ve anytime had! Fabricated it for banquet tonight and it was actually SCRUMPTIOUS! Altogether savory, creamy, aloof erect delicious! Acknowledgment for a abundant recipe!