French Onion Soup Grilled Cheese Sandwich

A French Onion Soup Grilled Cheese Sandwich is essentially French onion soup in grilled cheese form. It’s totally legit and majorly delicious!

Friday was cold and rainy. The kind of day that calls for a cozy fire in the fireplace, a hot bowl of soup, grilled cheese sammies and a few or six beers. So Pat and I did all of the above. I’ve never felt so grown up.

French Onion Soup Grilled Cheese Sandwich l

I’m pretty sure after the first bite of this sandwich I died and got a sneak peak at what heaven is like. And since that first glorious bite I’ve now decided that in my heaven, grilled cheese is served all the time. Like we’re talking breakfast, lunch and dinner here. With salt and vinegar chips. And pickles. And cake.

French Onion Soup Grilled Cheese Sandwich l

My eye has been on this recipe ever since Joy posted her version of it back in May. I was like ‘oh heck yes I’m gonna make these one day’. And so here I am. I know I’ve said this quite a bit on my blog and I’m sure it’s getting old… but this might be my favorite grilled cheese of all time. Onions… caramelized in butter with fresh thyme and beer, top it with Gruyere, then grill it in between slices of buttered bread and call it a French Onion Soup Grilled Cheese. Oh my god somebody kill me now so I can go straight to heaven and eat these all the time. Please.

Now if we could rewind it back a bit to where I was standing there in the grocery store looking at the small selection of Gruyeres, I made a split second decision to try apple-smoked Gruyere instead of the regular. Rebel I know. And I’m so glad I did. The smokiness of the cheese with the creamy-thyme-and-beer infused onions. Holy lord. I am speechless.

I started this recipe late in the day so I should probably apologize for the photos later on that are on the dark side. But I think you’ll forgive me once you make and taste this sandwich. It’s all kinds of deliciousness and your house will smell pretty fabulous too. Bonus.

Grab two yellow onions; trim off the ends, halve, peel and slice them into 1/4 inch slices.

Meanwhile melt three tablespoons of butter and a tablespoon of olive oil in a skillet over medium heat.

When it’s good and hot drop in all of the sliced onions. Give them a good toss so they are covered in the butter and oil. Let these cook for 5 good minutes without disturbing them.

Add in the salt, sugar and thyme.

And don’t forget the black pepper too.

Give that a good stir and cook for 5 minutes more undisturbed. I go on to cover the pan with a lid and stir every 5-10 minutes or so until a deep golden. You may have to reduce the heat if the onions are browning too fast. Now, since the onions take a while to caramelize, it’s a good idea to get everything else ready to go. So the time it takes to get this sandwich made and into your mouth won’t feel like an eternity.

Grate the smoked Gruyere. I love this stuff.

And butter the sour dough bread.

Once the onions are soft and reach a deep golden color it’s time to add the beer.

You could also use beef stock or white wine. But I like the beer… plus it gave me an excuse to drink during the afternoon. HA! I couldn’t have the rest of the bottle go to waste now could I? There are laws about that, right?

The beer is going to bubble up, so scrape up any bits that are stuck to the bottom of the pan.

The onions will be all creamy like so just pull the pan off of the burner so they don’t burn.

Heat up a non-stick pan or a griddle over medium/medium-high heat. Place butter-side down and top with a little Gruyere cheese and half of the onion mixture.

Top with more of the smoked Gruyere… ohhhh baby.

Place the top slice on the cheese, butter side up, and replace the lid that you used earlier so the cheese can steam… and melt.

French Onion Soup Grilled Cheese Sandwich l

And ever so carefully, flip the French Onion Soup Grilled Cheese Sandwich when the bottom of the grilled cheese is a deep golden and crispy.


Cut your French Onion Soup Grilled Cheese Sandwich in half and serve pronto.

This is a pretty decadent grilled cheese. It’s fancy… it’s cheesy… it was exactly what I pictured the ultimate French onion soup grilled cheese to be.


Enjoy! And if you give this French Onion Soup Grilled Cheese Sandwich recipe a try, let me know! Snap a photo and tag me on twitter or instagram!

French Onion Soup Grilled Cheese Sandwich l

My cookbook Simply Scratch : 120 Wholesome Homemade Recipes Made Easy is now available! CLICK HERE for details and THANK YOU in advance! 

Yield: 2 sandwiches

French Onion Soup Grilled Cheese Sandwiches

French Onion Soup Grilled Cheese Sandwiches
French onion soup in grilled cheese form.
Prep Time 5 minutes
Total Time 5 minutes


  • 2 medium to large yellow onions, sliced 1/4-inch thick
  • 3 tablespoons unsalted butter, (plus salted butter for bread)
  • 1 tablespoon olive oil
  • 1 teaspoon kosher salt
  • 1 teaspoon sugar
  • 1 teaspoon fresh thyme leaves
  • 1/2 teaspoon black pepper
  • 3 tablespoon beer (beef stock or white wine can be substituted)
  • 4 slices sour dough bread
  • 1/2 cup grated apple smoked gruyere cheese (or regular gruyere will do)


  1. In a large skillet over medium heat, melt the butter and olive oil together.
  2. Add in the onions and stir so they are coated in all the fat. Cook undisturbed for 5 minutes.
  3. Stir and add in the salt, pepper, sugar and thyme. Stir, cover the pan with a lid and let cook. Stir occasionally until the onions are soft and a deep golden in color. Reduce the heat if you notice the onions are browning too soon. Reduce the heat if you notice the onions are browning too soon.
  4. Add in the beer and scrape any bits that accumulate on the bottom of the skillet and then remove them off of the heat.
  5. On a preheated griddle or large skillet; place a slice of buttered bread {butter-side down} and top it with a little shredded smoked Gruyere. Add half of the onion mixture and then more of the cheese. Top with a second slice of buttered bread {butter-side up}.
  6. Flip when the bottom is crispy and golden, repeat on second side.
  7. Cut in half and serve.
[this post contains affiliate links.]

    Pin It

36 Responses to “French Onion Soup Grilled Cheese Sandwich”

  1. #
    the 3volution of j3nn — December 10, 2012 at 8:26 am

    All the goodness of French onion soup in a sandwich. Lovely!! I’d like two, please. 🙂

  2. #
    Cate — December 10, 2012 at 9:32 am

    So brilliant! I’ve been wanting to make french onion soup for the past couple weeks but haven’t had the time to make a gf baguette for topping the soup. This sounds like the perfect solution 🙂

  3. #
    Katrina @ Warm Vanilla Sugar — December 10, 2012 at 10:59 am

    Your caramelized onions are 100% perfect! LOVE the look of this sandwich!

  4. #
    Rachel Cooks — December 10, 2012 at 1:07 pm

    OH man—-this looks sooooo amazing!!!

  5. #
    brandi — December 10, 2012 at 1:57 pm

    um…I think you’re right about the beer rule. we have that rule in our house, anyway!

  6. #
    Elizabeth — December 10, 2012 at 2:37 pm

    I love you and Joy! Seriously I can’t stand how good this looks!

  7. #
    Courtney — December 10, 2012 at 2:49 pm

    If I could form a coherent thought, I would, but……..yeah, I just want one of these NOW.

  8. #
    Bev @ Bev Cooks — December 10, 2012 at 2:54 pm

    Please, oh my Lord, please, give this to me.

  9. #
    Lauren @ Part Time House Wife — December 10, 2012 at 2:56 pm

    Laurie I’m crying over this. This is one of those that makes me think why didn’t I think of this. This is going to push my to tight pants over the edge and make them officially to small.

  10. #
    Lauren @ Climbing Grier Mountain — December 10, 2012 at 2:58 pm

    I NEED this right now! Holy yum!!

  11. #
    Jan B — December 10, 2012 at 3:01 pm

    I LOVE french onion soup and I LOVE gruyere cheese. Going to Nordstroms today for the soup. MMMM Good pick…

  12. #
    Kathryn — December 10, 2012 at 3:37 pm

    There’s an awesome stall in the market near my office that does a similar sandwich and it’s pretty much the best thing ever so I can appreciate just how mind-blowingly awesome this version must be! Can’t wait to try this myself.

  13. #
    sally @ sallys baking addiction — December 10, 2012 at 3:49 pm

    Laurie. Can I please come over and eat a huge cheesey french onion-y heaven sandwich with you? I’ll bring the cookies for dessert! and the beer – mandatory. It sounds like my friday night with Kevin – beer + cheese + rainy weather. But I had my cheese on top of a boring salad. a cheesy sandwich just sounds so much better right now.

  14. #
    Heather (Heather's Dish) — December 10, 2012 at 3:52 pm


    I am so so very in love with this recipe – more cheese & bread please!

  15. #
    Mandie @ Oh So Decadent — December 10, 2012 at 4:06 pm

    OHMYGOSH these sound TO DIE FOR. You are completely right, if I had this grilled cheese there would be no point in living any further. Holy moley. I need to make these very soon!

  16. #
    Katrina @ In Katrina's Kitchen — December 10, 2012 at 4:28 pm

    GET IN MY FACE!! I want to eat about 5 right now. Overkill? Nah.

  17. #
    Alice — December 10, 2012 at 4:59 pm

    Oh my word!

  18. #
    Nicole @ lapetitebaker — December 10, 2012 at 6:54 pm

    This grilled cheese looks perfect for the rainy monday I am having. Melty cheese and caramelized onions is a match made in food heaven!

  19. #
    Megan | Eats Daily — December 10, 2012 at 8:53 pm

    YUM!! These just made me hungry. Too bad my husband isn’t a fan of french onion soup…I guess that means I would have to eat both. OH WELL

  20. #
    Cassie | Bake Your Day — December 10, 2012 at 9:12 pm

    I just can’t even begin to explain how much I want one of these, or two, for dinner. Amazing!

  21. #
    Amber {Sprinkled With Flour} — December 11, 2012 at 12:24 am

    You’re killing me with this sandwich….whaaaat? This looks insanely good. Seriously. 🙂

  22. #
    John — December 11, 2012 at 12:24 am

    Mde tonight for dinner, along with some Potato Leek soup. Perfect Monday dinner on a cold, rainy day. Loved it – so did the wife and kids !

  23. #
    Julie @ Table for Two — December 11, 2012 at 1:31 am

    omg that block of gruyere cheese looks amazing. just shred it in my mouth! haha that sounds bad. anyway – i seriously want these in my life!

  24. #
    Haley @ The Girly Girl Cooks — December 11, 2012 at 3:25 am

    Oh wow Laurie! These look fantastic! You changed the way I made grilled cheese when you mixed mozzarella with pesta, and now you have done it again! Must try 🙂

  25. #
    Haley @ The Girly Girl Cooks — December 11, 2012 at 3:25 am

    Ugh. I meant “pesto” not pesta. I was so excited about this grilled cheese, my fingers started typing fast!

  26. #
    Donna — December 11, 2012 at 9:29 am

    OMG….this looks like the DEFINITIVE grilled cheese gone francophone….I bookedmarked this entry so quickly I with such gusto that I almost broke my precious little laptop…and we certainly cannot have that happening just before the holidays with all of your SCRUMPTIOUS offerings carefully organized within its confines….

    I am so going out NOW to procure the best smoked gruyère I can find ..Luckily…Switzerland is just a fifteen minute drive!..Also…Reader John is correct…a wonderful potato leek soup..or celeriac root/leek (a bit lighter/lower g.i. riff) would be PERFECTION with this….Not to say that we are, seriously, caring MUCH about the carb load here obviously…simply to JUUSTIFY devouring this in cozy, fireside fashion. You have really created the quintessential, ultimate grilled cheese here…My french/american family will freak…..Un grand MERCI BIEN…..

  27. #
    Christina Yeager — December 11, 2012 at 4:07 pm

    Ok…I don’t even really like onions, but am DROOOOLING over this sandwich! You definitely have a way! 🙂

  28. #
    Cathy @ Noble Pig — December 12, 2012 at 12:29 am

    This is what I want for dinner!!

  29. #
    kamrul hasan — December 12, 2012 at 12:27 pm

    i was the looking for the same and related info, what you describe on your article. And found you through google search. Its helps me a lots and i understood that you are one of skill article writer/ blogger. I have book marked your blog and hope to visit again to learn more. Thanks for your valuable efforts and time.

  30. #
    Erin @ Dinners, Dishes and Desserts — December 12, 2012 at 9:41 pm

    This is AH-Mazing!! Hubby would DIE for these!

  31. #
    Tony @ Simple Awesome Cooking — December 17, 2012 at 5:55 pm

    Brilliant – combining the soup with the sandwich and extracting the best flavors from each. This is going on the must try list. Thanks for sharing.

  32. #
    Chung-Ah | Damn Delicious — December 17, 2012 at 10:37 pm

    Oh my goodness – I could just take a bath in that pile of caramelized onions! Not sure how that would work but you get my drift 🙂

  33. #
    bakingismyzen — January 15, 2013 at 10:56 am



  34. #
    a farmer in the dell — January 16, 2013 at 3:07 am

    oh wow! this is brilliant. French Onion soup is my favorite. I’ll take it in grilled cheese form any day!

  35. #
    Amanda at — April 19, 2013 at 4:06 pm

    This grilled cheese looks so delicious. Have you entered it in the Grilled Cheese Academy’s recipe showdown? If not, you should! Here’s the website:

  36. #
    Alisa Dickson — May 16, 2013 at 3:08 pm

    This is THE BEST sandwich I think I have ever made! Totally recommend this!

Leave a Comment