• Bloglovin
  • Facebook
  • Instagram
  • Pinterest
  • Twitter
  • Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Never Not Hungry logo

  • Recipes
  • Wanderlust
    • Europe
  • Inspiration
    • The Magic of Books
      • Monthly Book Bag
      • Cookbook Clique
  • Shop
  • Crumbs, Nibbles, Sips & Sprinkles
    • Obsessed
      • Gift & Lifestyle Guides
    • Resources
    • On Sundays We Brunch
  • About
    • Work With Me
    • Contact
    • Le Bon Fond Cooking School
  • Newsletter Subscription

French Onion Grilled Cheese Sandwiches

[heart_this] · Apr 10, 2019 · 1 Comment

Disclosure: This post contains affiliate links. As an Amazon Associate, I earn from qualifying purchases. This means if you click on any Amazon links on my website and make a purchase, I may receive a commission at no additional cost to you. It’s a great way to support my blog, so I can keep sharing delicious recipes with you!

Jump to Recipe·Print Recipe

French onion soup is bomb-we all know that-but sometimes you need the same flavors in a portable format ASAP.  That’s where a French onion soup grilled cheese comes in to save the day.  Especially when we have some amazing tomato soup to dip it in (coming tomorrow).I made a fantastic French onion soup recipe from Petit Trois restaurant, and while I highly suggest making it when you have a leisurely day at home, it’s definitely not the kind of thing you can whip up on a whim and sit down to eat within an hour.  It involves making your own veal stock, slowly caramelizing onions, and bringing it all together to simmer before broiling it with its cheesy top.

This sandwich is the antidote to that!  While you do have to spend the time to caramelize the onions, it’s mostly hands-off with the exception of a little stirring.  Once the onions are caramelized, you bring them together with Gruyere cheese, a little fresh parsley and a few slices of bread.  Griddle in the skillet to get that ooey-gooey, melted cheese combination with crisp bread and you’re ready to go!  Consider all of your French onion soup cravings handled with this sandwich.

Print
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

French Onion Grilled Cheese Sandwiches


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

  • Author: Amanda
  • Yield: 2 sandwiches
Print Recipe
Pin Recipe

Description

All the flavors of a classic French onion soup, but quicker to make and portable!  Gruyère cheese, slow-caramelized onions, thyme and parsley are griddled in between sourdough bread until melted and ooey-goeey on the inside, and crisp and golden brown on the outside.  Consider all of your French onion soup cravings handled with this sandwich!


Ingredients

Scale
  • 3 tablespoons butter
  • 2 large sweet onions, very thinly sliced
  • 1 teaspoon finely chopped fresh thyme
  • Kosher salt and freshly ground black pepper, to taste

TO ASSEMBLE:

  • 2 tablespoons butter, at room temperature
  • 2 tablespoons mayonnaise, at room temperature
  • 1/2 teaspoon fresh thyme, minced
  • 4 slices sourdough bread
  • 6 ounces freshly grated Gruyère cheese
  • 2 tablespoons chopped fresh flat-leaf parsley


Instructions

  1. In a large, heavy-bottomed pan, melt the butter over medium-low heat.  Add the onions and sprinkle with salt.  Cook, stirring occasionally, until golden and caramelized, about 40 to 50 minutes.
  2. Heat a large nonstick skillet or griddle over medium heat.  Combine the mayonnaise and butter and mash together until fully combined; stir in the 1/2 teaspoon chopped thyme.  Spread one side of each piece of bread with this mixture.  Flip the bread over to the unbuttered side and place 1/4 of the cheese on two slices.  Place half of the onions on each top and the remaining cheese and parsley.  Top with the second piece of bread.  Transfer the sandwiches to the preheated skillet and cook until golden brown and the cheese is melted, about 5 to 6 minutes per side.

Notes

Inspiration: Gruyère French Onion Grilled Cheese from The Pretty Dish by Jessica Merchant

  • Category: Sandwiches & Wraps, Grilled Cheese

Did you make this recipe?

Tag @iamnevernothungry on Instagram and hashtag it #nevernothungry

Related

Share
Pin426
Tweet
Yum
Email
426 Shares

Recipe Grilled Cheese, Sandwiches & Wraps

Reader Interactions

Trackbacks

  1. French Onion Grilled Cheese Sandwiches — Never Not Hungry | My Meals are on Wheels says:
    April 17, 2019 at 10:38 pm

    […] via French Onion Grilled Cheese Sandwiches — Never Not Hungry […]

    Reply

Leave a ReplyCancel reply

Primary Sidebar

  • Bloglovin
  • Facebook
  • Instagram
  • Pinterest
  • Twitter

ABOUT ME

Hi. I’m Amanda. I love food, cooking, sharing it with others and documenting it. I’m a little of this and little of that-taste while you go type of cook.  I found a true passion over the years when I really began to understand how deeply connected food and love are.

Learn More

FAVORITE BLOGS

Pinch of Yum

How Sweet Eats

Smitten Kitchen

Broma Bakery

FoodieCrush

Spoon Fork Bacon

A Cozy Kitchen

What’s Gaby Cooking

Wood & Spoon

Footer

Privacy & Cookies: This site uses cookies. By continuing to use this website, you agree to their use.

To find out more, including how to control cookies, see here: Cookie Policy

Receive New Posts in Your E-mail!

Enter your email address to follow this blog and receive notifications of all new content by email.

What’s happening on Instagram

iamnevernothungry

I love good food.

Pre-made margarita mix? Couldn’t be me. 🙅‍♀️ This Passionfruit Margarita is all real fruit puree, fresh lime, and agave—aka it actually tastes like fruit instead of liquid Skittles. Bright, tropical, and just floral enough to trick you into thinking your backyard is a beach. Sip it now, thank me later. 🍹✨

#CocktailHour #HappyHourVibes #DrinkBetter #CheersToThat #WeekendMood #BackyardBar #SipSipHooray #TropicalVibes #FreshIsBest #NeverNotHungry
Never thought I’d be the person writing a tater Never thought I’d be the person writing a tater tot casserole recipe, and yet… here we are. 🙃 I’ve never been much of a casserole person—something about the whole “dump a bunch of things in a dish and bake it” approach never really spoke to me. But then, I went to @guesthousetavernoyster in West Des Moines, IA, and had a version of this that was so absurdly good, I couldn’t stop thinking about it. 

Forget the cream-of-whatever soups and sad ground beef—this version goes full send: beef braised until it basically collapses into a rich, glossy sauce, smoky cheddar + parm layered on top, and a blanket of crispy tots that stay golden and crunchy. It’s comfort food, but with actual effort behind it. Big enough to feed a crowd (or fuel your leftover game all week). Who’s grabbing a fork first? 🥄🔥

#ComfortFood #CozyEats #FromScratchCooking #DinnerGoals #FoodObsession #KitchenProjects #HomemadeGoodness #FeedYourPeople #SavoryBites #InMyKitchen #Food #Recipe #NeverNotHungry
Golden, crispy, salty — this focaccia is everyth Golden, crispy, salty — this focaccia is everything. Fresh from the oven, it’s got that perfect crust, pillowy interior, and enough flavor to steal the show. Who wants a slice (or three)?

#BreadLovers #Focaccia #HomemadeBread #Food #Recipe #nevernothungry #ItalianBaking
Hey soup lovers 🥄 — this one’s for you! Ful Hey soup lovers 🥄 — this one’s for you! Fully loaded: smoky sausage, hearty kale, cheesy tortellini, all swimming in a creamy broth that feels like a hug in a bowl. 🍲✨ Easy to make, impossible not to cozy up to. Who’s in for seconds?

#ComfortFood #SoupSeason #WeeknightWins #Food #Recipe #nevernothungry
There are few things in this world more satisfying There are few things in this world more satisfying than a perfectly crispy, cheesy, saucy Chicken Parmesan. But let’s be honest—most Chicken Parm out there is a sad, soggy mess. The crispy breading turns to mush under a blanket of sauce, the chicken is either dry or rubbery, and the whole thing is just… fine (like pizza, even a bad chicken Parm is still pretty good). And if I’m making Chicken Parmesan, I don’t want fine—I want the best. 

So, I went on a mission to create the ultimate Chicken Parm recipe: crispy and golden on the outside, juicy and flavorful on the inside, with a cheesy, saucy topping that enhances instead of destroys all that hard-earned crispiness. Spoiler alert: It’s a bit fussy. But I promise you, it’s worth it.

#ComfortFood #HomeCooking #FoodieFavorites #CrispyAndCheesy #MadeFromScratch #DinnerGoals #FoodObsessed #TastyAF #CookAtHome #Foodstagram #Food #Recipe
If you think salads are boring, this one will chan If you think salads are boring, this one will change your mind. Bursting with juicy citrus, creamy burrata, and a smoky-sweet caramelized grapefruit dressing, this dish is anything but predictable. It’s a vibrant mix of flavors and textures—peppery arugula, crisp fennel, crunchy pistachios, and tart pomegranate arils, all tied together with a sweet-and-tangy dressing.

The real game-changer here? Caramelizing the grapefruit. Searing the cut side with a little sugar intensifies its sweetness and tames the bitterness, adding a depth of flavor you didn’t know grapefruit had. It also makes your kitchen smell like you know what you’re doing, which is always a plus.

#ModernCooking #EatTheSeasons #Foodie #FoodObsessed #NotYourAverageSalad #Food #Recipe #Salad
Tom Kha Gai is not your average chicken soup. To m Tom Kha Gai is not your average chicken soup. To me, this soup is just as at home as a summer meal as it is for a cold-weather one.

Coconut milk that’s creamy without being heavy, lemongrass + lime leaves that taste like sunshine, a little chili kick to wake up your taste buds. It’s bright, cozy, and way too easy to make at home. Basically: comfort food with a passport stamp. 

#ThaiFood #HomeCooking #FromScratch #SoupSeason #Foodstagram #DinnerGoals #Foodie
If you think stuffed mushrooms are a relic of 1970 If you think stuffed mushrooms are a relic of 1970s dinner parties, let me introduce you to the glow-up you didn’t know you needed. These Manchego-Stuffed Mushrooms with Chorizo Breadcrumbs are rich, crispy, and dangerously poppable—so much so that you might accidentally eat an entire tray while “taste-testing.” (Not speaking from experience. Definitely not.)

They’re easy enough for a casual get-together but fancy enough to pretend you have your life together. Perfect for parties, holidays, or a Tuesday night when you need a snack that’s extra.

Get the full recipe on the blog! Link in bio.

#StuffedMushrooms #EasyEntertaining #SavorySnacks #Appetizers#nevernothungry
Sunday Funday anyone? Enter: the Paper Plane. Bour Sunday Funday anyone? Enter: the Paper Plane. Bourbon, Aperol, Amaro Nonino, and lemon—equal parts, no fuss, all reward. 🍹✈️ #SundayFunday #Cocktails
This Roasted Cipollini Onion Torta with Pecorino F This Roasted Cipollini Onion Torta with Pecorino Fonduta is a showstopper that combines rich, caramelized cipollini onions with a buttery, Pecorino-infused crust and creamy fonduta made with Pecorino and Taleggio. Perfect for a special dinner or impressing guests, this dish is packed with layers of deep, savory flavors and satisfying textures. While it’s not quick or cheap, the effort is absolutely worth it—each bite is a melt-in-your-mouth experience of sweet onions, creamy cheese, and a flaky crust. Perfect for food lovers who appreciate the magic of slow-roasted onions and decadent, cheesy indulgence.

#Food #Recipe #DinnerParty #ImpressYourGuests #Foodstagram #ItalianFood #RusticCooking #SavoryPie #IndulgentEats #FromScratch #NeverNotHungry
Elevate your Valentine’s Day with this stunning Elevate your Valentine’s Day with this stunning Red Wine-Poached Pear and Blue Cheese Salad—no prix fixe menu required. Sweet, salty, crunchy, and creamy—it’s a showstopping salad that’s easy to prep ahead!

Sweet, tender pears, creamy blue cheese, crispy pancetta, and crunchy walnuts come together in the perfect balance of flavors and textures. It’s elegant but easy, special but not fussy—just how a great meal (and date) should be.

Pour a glass of wine, plate up something delicious, and enjoy. ❤️

Recipe linked in bio!

 #ValentinesDayDinner #RedWineAndDine #WeeknightGourmet
January salads are all about ‘new year, new me,’ but let’s be real—no one said that ‘me’ had to skip crispy potatoes or steak. 

This Crispy Potato & Balsamic Steak Salad with Creamy Boursin Dressing is the perfect balance of ‘I’m trying’ and ‘treat yourself.’ Because life’s too short for sad salads—and bad food in general. Link in bio for the recipe! 

#NeverNotHungry #SaladGoals #DinnerSalad #Recipe #Healthyish
Follow on Instagram
  • Facebook
  • Twitter
  • Instagram
  • Pinterest

Copyright © 2025 Never Not Hungry on the Seasoned Pro Theme
Terms & Privacy Policy