These French Dip Sliders are a perfect mix of comfort and convenience. I love how the melted Swiss cheese, tender roast beef, and caramelized onions come together inside warm, buttery slider buns. It’s everything I enjoy about a classic French dip sandwich—just in a more fun, sharable form. French Dip Sliders

Why I’ll Love This Recipe

I love how quick these are to prep and how easily they serve a group. Whether I’m making them for game day, a party, or just a cozy dinner, these sliders are always a hit. The buttery topping, flavorful au jus for dipping, and soft rolls make this dish incredibly satisfying. I also appreciate that I can prep much of it ahead of time.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

  • Slider buns

  • Unsalted butter

  • Yellow onion

  • Fresh thyme leaves

  • Garlic

  • Granulated sugar

  • Salt

  • Black pepper

  • Roast beef, thinly sliced

  • Swiss cheese, thinly sliced

  • French onion soup (canned)

  • Water

  • Packet of Au Jus mix

Directions

  1. I start by preheating the oven to 350°F and placing the bottom halves of the slider buns in a baking dish.

  2. In a skillet, I melt butter and cook the sliced onions with thyme, garlic, sugar, salt, and pepper until they’re soft and golden.

  3. I add in the roast beef strips and warm them with the onion mixture.

  4. I layer the beef and onion mixture over the buns, then top with Swiss cheese and the bun tops.

  5. I melt more butter, mix in thyme, garlic, and salt, then brush this over the tops of the sliders.

  6. I bake for 15–20 minutes until the cheese is melted and the tops are golden brown.

  7. While the sliders bake, I prepare the au jus by heating French onion soup, water, and the au jus packet in a skillet until warmed through.

Servings and timing

  • Servings: 12 sliders

  • Prep Time: 25 minutes

  • Cook Time: 15 minutes

  • Additional time for au jus: 10–12 minutes

  • Total Time: About 40 minutes

Variations

  • I like to swap the Swiss cheese with Gruyère, provolone, or Havarti depending on my mood.

  • If I don’t have fresh thyme, I use dried thyme—just a little less to avoid overpowering the flavor.

  • For a bolder kick, I sometimes add a smear of horseradish sauce or Dijon mustard under the beef.

  • When I want more crunch, I toast the slider buns before layering the ingredients.

  • I’ve also used different deli meats like turkey for a fun twist.

Storage/Reheating

  • I store leftovers in an airtight container in the fridge for up to 2 days.

  • I don’t freeze these because the bread can get soggy and lose its texture.

  • To reheat, I use the toaster oven or microwave until just warmed through—usually about 30 seconds to 1 minute.

FAQs

How far ahead can I make these sliders?

I make the caramelized onions a day in advance and store them in the fridge. When I’m ready to assemble, I just reheat them and continue the recipe.

Can I use different types of rolls?

Yes, I often switch between potato rolls, Hawaiian rolls, or even brioche buns based on what I have. All work well.

What’s the best way to slice the buns?

If they aren’t pre-sliced, I use a serrated knife and keep the tops and bottoms as full sheets. It makes assembly easier and helps everything stay together during baking.

Can I use pre-cooked roast beef?

Absolutely. I usually use deli-sliced roast beef and warm it with the onions for better flavor and texture.

How do I keep the sliders from getting soggy?

I make sure not to overload the buns with too much butter or onion mixture. A light layer keeps things flavorful without soaking the bread.

Conclusion

These French Dip Sliders are one of my go-to comfort meals when I want something rich, warm, and easy to share. I love that they’re simple enough for a weeknight but tasty enough for a party. The flavorful beef, gooey cheese, and savory dip make this recipe one I come back to again and again. Whether I’m making a full batch for a crowd or just a few for dinner, they always disappear fast.

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French Dip Sliders

French Dip Sliders

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  • Author: Lidia
  • Prep Time: 25 minutes
  • Cook Time: 15 minutes
  • Total Time: 40 minutes
  • Yield: 12 sliders
  • Category: Appetizer
  • Method: Baking
  • Cuisine: American
  • Diet: Halal

Description

These French Dip Sliders are warm, cheesy, and packed with tender roast beef and caramelized onions, served with a flavorful au jus for dipping—perfect for parties, game days, or cozy family dinners.


Ingredients

  • 12 slider buns
  • 4 tbsp unsalted butter (divided)
  • 1 large yellow onion, thinly sliced
  • 1 tsp fresh thyme leaves (plus more for topping)
  • 2 cloves garlic, minced
  • 1 tsp granulated sugar
  • 1/2 tsp salt (plus more to taste)
  • 1/2 tsp black pepper
  • 1 lb roast beef, thinly sliced
  • 8 slices Swiss cheese
  • 1 can (10.5 oz) French onion soup
  • 1/2 cup water
  • 1 packet Au Jus mix

Instructions

  1. Preheat oven to 350°F (175°C). Place the bottom halves of the slider buns in a baking dish.
  2. In a skillet over medium heat, melt 2 tbsp butter. Add onions, thyme, garlic, sugar, salt, and pepper. Cook until onions are soft and golden, about 10–12 minutes.
  3. Add roast beef to the skillet and warm it with the onion mixture for 2–3 minutes.
  4. Spoon the beef and onion mixture evenly over the bottom buns. Top with Swiss cheese slices and cover with the bun tops.
  5. Melt the remaining 2 tbsp butter and stir in a pinch of thyme, minced garlic, and a bit of salt. Brush over the tops of the buns.
  6. Bake sliders for 15–20 minutes, or until cheese is melted and tops are golden brown.
  7. While baking, combine French onion soup, water, and au jus mix in a saucepan. Heat until warmed through, about 10–12 minutes.
  8. Serve the warm sliders with the prepared au jus on the side for dipping.

Notes

  • Swap Swiss cheese for Gruyère, provolone, or Havarti.
  • Use dried thyme if fresh isn’t available—just reduce the quantity slightly.
  • Add horseradish or Dijon mustard under the beef for extra flavor.
  • Lightly toast the buns before assembling for added crunch.
  • Different deli meats like turkey also work great in this recipe.

Nutrition

  • Serving Size: 1 slider
  • Calories: 285
  • Sugar: 3g
  • Sodium: 610mg
  • Fat: 17g
  • Saturated Fat: 9g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 19g
  • Fiber: 1g
  • Protein: 15g
  • Cholesterol: 48mg

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