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Published: Apr 14, 2021 · Modified: Jun 1, 2021 by foodyschmoody ·

French Onion Burger

Name: French Onion Burger
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Ingredients: 1 T olive oil; 1 T butter; 3 medium sized sweet onions (sliced thinly); 1 tsp worcestershire sauce; 1 tsp salt; 1/2 tsp black pepper; 1/4 C beef broth; 2 lb ground beef (85%); 1 T Worcestershire sauce; 2 T beef broth; 1/2 tsp black pepper; 6 oz fontina cheese (sliced); 6 hearty hamburger buns

This French Onion Burger is the ultimate comfort food burger with caramelized onions and super melty fontina cheese.

This recipe was originally published in May 2016 and republished with new photos (recipe untouched) April 2021.

This post is sponsored by Pepperidge Farm in conjunction with Blog Meets Brand and I have been compensated for my participation. As ALWAYS, all opinions are my own. #PepperidgeFarm #FarmhouseHeartyBuns

burger prepared with onions smothered on top with text reading french onion burger

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How To Make The Onions
Forming The Burger Patties
Cooking The Burger
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I feel I must warn you before I begin. This burger is not for the faint of heart. It's big, very big, super beefy and it's piled high with delicious caramelized onions and lots of melty fontina cheese. Oh, and it's awesome!

Because this burger packs in so much, you will ~~want to~~ have to choose a bun that can hold all this deliciousness. I thought this would be the perfect opportunity to try out the new Pepperidge Farm® Farmhouse Hearty Buns.I mean, the word hearty is right there in the name; seemed like a good fit. Boy, was I right. I love when I'm right. Good thing I'm right most of the time.

Now on to what I put in this beast of a burger.

How To Make The Onions

Prep the onions first. I wanted them not only to be caramelized but to boast the flavors of a French Onion Soup. Slice the onions super thin. You can do this either by hand or with a mandolin. I heated up a pan with butter AND oil and added the onions in. After they went through their caramelization process, I added some black pepper, Worcestershire sauce and beef broth and let them cook down a bit more, just to get all that good flavor infused the onions.

Forming The Burger Patties

While all that flavor is being incorporated into the onions I formed my patties. I used plain old ground beef (85%), about 2 pounds. I seasoned it with the same seasonings I put into the onions; black pepper, Worcestershire and beef broth. You want to form these bad boys big. I was able to get 6 huge burgers out of this.

Make sure when you form your patties that you press your thumb in the center of the patty. Placing a divot there will help prevent the burger from losing it's perfect shape while cooking. If it's not shaped nice and flat on top, you'll have a hard time getting those toppings to stay put!

Cooking The Burger

Grill your burgers to your liking. I like mine a nice pink medium. It took about 12 minutes to get these big boys cooked. Be sure not to keep your flame up too high. After I got good grill marks and the meat released a bit from the grates, I flipped them over, reduced the heat and covered the grill. Once the burgers were looking good, I put my fontina cheese on top and closed the top again just until it was all beautiful and melty. Oh man, I love fontina cheese. It melts so perfectly. If you haven't tried fontina yet, this is a great reason to do so.

close up of prepared burger on a white plate with a bottle of beer in background

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