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French Onion Soup Burgers

French Onion Soup Burgers with Gruyère and Arugula

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Recipe Details


We’d like to reintroduce you to one of our most epic mashups: classic French onion soup in burger form. In this Popular Recipe, beef burgers are slathered with melty Gruyère cheese and sweet caramelized onion gravy. The burgers are sandwiched between toasted English muffins that have the ideal craggy surface for absorbing the mustard and the gravy. Served with a heap of arugula salad alongside, this powerhouse meal will have you wanting more long after the last bite.


  • Stovetop Only

Quick facts

Serving size
Prep & cook time
Cooking Skill
By Chef Elana

By Chef Elana

Nutritional info

  • Calories 760
  • Protein 49g
  • Total Carb 38g
  • Total Fat 45g

Given the cook-at-home nature of Plated and natural variation in ingredients, nutritional information is approximated. See details.

Ingredients & Equipment

What we send

  • baby arugula
    3 ounces
    baby arugula
  • thyme
    1/8 ounce
  • lemon
  • yellow onion
    yellow onion
  • unsalted butter
    3 packets
    unsalted butter
  • ground beef
    12 ounces
    ground beef
  • flour
    1 tablespoon
  • beef stock
    1 container
    beef stock
  • Gruyère cheese
    2 slices
    Gruyère cheese
  • English muffins
    English muffins
  • Dijon mustard
    2 packets
    Dijon mustard

What You’ll Need

  • 2 10" medium pans, 1 with lid

Cooking Steps

  1. Prepare ingredients

    Prepare ingredients

    Rinse all produce. Pat arugula dry with paper towel. Strip thyme leaves, discarding stems. Halve lemon. Peel onion, halve, and thinly slice. In a large bowl, whisk together juice of ½ lemon (or start with a little, then taste and add more as desired), ½ tablespoon olive oil, and ⅛ teaspoon salt. Set aside for Step 6. Use remaining lemon to brighten a glass of water.

  2. Caramelize onion

    Caramelize onion

    Heat butter in a medium pan over medium-high heat. When butter is foamy, add thyme and onion and cook, stirring occasionally, until onion is light brown and softened, about 6 minutes. Then, add 1 tablespoon water and reduce heat to medium. Cook, stirring continuously to keep it from sticking, until onion is golden brown and very soft, about 5 minutes more.

  3. Form burgers

    Form burgers

    While onion cooks, pat beef dry with paper towel and season with ½ teaspoon salt and pepper as desired. Using your hands, mix well, then form into 2 equal patties, about ½-inch thick. Using your thumb, create a dimple on top of each. Place burgers on a plate and set aside until Step 5.

  4. Make onion gravy

    Make onion gravy

    Add flour to pan with onion, still over medium heat, and cook, stirring vigorously to prevent burning, until flour is no longer visible, about 2 minutes. Add beef stock and bring to a boil over high heat. Reduce heat to medium high and simmer, stirring occasionally, until gravy is thickened and reduced by ⅔, 2-3 minutes more. Remove pan from heat. Season with ⅛ teaspoon salt and pepper as desired.

  5. Sear burgers

    Sear burgers

    Heat 1 teaspoon olive oil in a separate medium pan over medium heat. When oil is shimmering, add burgers and sear, without flipping, until browned on bottom, about 4 minutes. Flip and continue searing until browned and medium rare, 3-4 minutes. Spoon onion gravy over burgers, then top with Gruyère. Cover pan and cook until cheese is melted, 1-2 minutes more. Transfer burgers to a plate. Wipe pan clean for the next step.

  6. Finish and plate burgers

    Finish and plate burgers

    Split English muffins open horizontally, then add cut-side down to pan from burgers over medium heat. Toast until light golden, about 2 minutes. Spread mustard over cut sides of muffins. Layer with French onion soup burgers and any remaining onion gravy. Add arugula to bowl with dressing, toss to coat, and serve with burgers. Dig in!

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