French Dip Sliders

The first time I made these sliders for a Sunday football gathering, my brother actually stood by the oven waiting for the timer to beep. The smell of melting provolone and caramelized onions had taken over the entire house, and suddenly nobody cared about the game on TV anymore. These little sandwiches have this way of disappearing faster than I can plate them.

Last winter when my neighbor was recovering from surgery, I brought over a batch of these sliders. She texted me two days later asking for the recipe because her husband, who supposedly hates onions, had eaten three of them and kept talking about the buttery, savory dipping sauce. Sometimes the simplest food is exactly what someone needs.

Ingredients

• 450 g (1 lb) thinly sliced deli roast beef: Ask for it sliced paper thin at the deli counter, it soaks up the au jus so much better
• 12 slider rolls or mini brioche buns: Brioche adds sweetness but Hawaiian rolls work beautifully too
• 12 slices provolone cheese: Swiss or mozzarella will melt just as well if that is what you prefer
• 1 small yellow onion, thinly sliced: Take your time here, thinner onions mean sweeter results
• 2 tablespoons unsalted butter: You will need a bit more for brushing the tops if you want extra golden buns
• 2 tablespoons mayonnaise and 1 tablespoon horseradish sauce: The creamy tang cuts through the rich beef
• 2 cups beef broth: Low sodium broth gives you more control over the final flavor
• 1 tablespoon Worcestershire sauce, 1 teaspoon soy sauce, 1/2 teaspoon garlic powder, and 1/2 teaspoon onion powder: This combination creates that classic French dip depth
• Salt and black pepper, to taste: Taste your au jus before seasoning
• 1 tablespoon fresh parsley, chopped (optional): Mostly for looks but it does add a fresh finish

Instructions

Caramelize the onions slowly:

Melt butter in a medium saucepan over medium heat, add sliced onions, and cook 6 to 8 minutes until soft and golden. Set them aside while you make the au jus.

Simmer the dipping sauce:

Combine beef broth, Worcestershire sauce, soy sauce, garlic powder, onion powder, salt, and pepper in a separate saucepan. Bring to a simmer over medium-low heat, then add sliced roast beef to warm through for 2 to 3 minutes. Remove beef with tongs but keep that precious broth hot for serving.

Assemble the sliders:

Slice slider rolls in half horizontally and place bottom halves on a parchment lined baking sheet. Spread with mayonnaise and horseradish sauce if using, then layer warm roast beef evenly over the buns. Top with those caramelized onions and a slice of provolone cheese on each slider before covering with bun tops.

Bake until golden and bubbly:

Brush the tops lightly with melted butter for extra color, then bake at 180°C (350°F) for 10 to 12 minutes until the cheese is melted and rolls are slightly toasted.

.Serve and dip immediately:

Place hot sliders on a platter with warm au jus in ramekins alongside. Sprinkle with fresh parsley if you want them to look as good as they taste.

Save

My daughter requested these for her birthday dinner instead of a cake one year. We set up a little slider bar with different cheeses and let everyone assemble their own, which turned into this chaotic happy memory I still think about whenever I smell beef broth simmering on the stove.

Making Ahead For Parties

You can absolutely assemble these sliders the night before and refrigerate them unbaked. Just wrap the baking sheet tightly with foil and add about 3 to 4 minutes to the baking time since they will be cold going into the oven. The au jus can also be made a day ahead and reheated gently before serving.

Cheese Options

While provolone is classic for a reason, gruyere adds this amazing nutty depth that takes these sliders somewhere fancy. For something milder, young gouda melts beautifully and adds a subtle sweetness that plays nicely with the savory beef. Just stick to cheeses that melt well instead of crumbly ones.

Perfect Sides For Your Spread

A crisp green salad with vinaigrette cuts through all the richness. I have also served these alongside roasted potato wedges or even just some pickles and extra onions for people who want more tang. These sliders are filling enough to be the main event at most gatherings.

• Set out extra au jus because everyone will want seconds
• Small ramekins work better than large bowls for less spilling
• Keep the au jus hot throughout the party in a small slow cooker

Save

There is something about food you eat with your hands that brings people together. These sliders have become my go to for feeding a crowd because nobody can resist them, and honestly, neither can I.

Recipe FAQs

→ What cut of beef works best for these sliders?

Thinly sliced deli roast beef is ideal for convenience and tenderness. You can also use leftover prime rib, sirloin, or chuck roast that's been cooked until tender and sliced paper-thin against the grain.

→ Can I make these sliders ahead of time?

Yes! Assemble the sliders completely, cover tightly with foil, and refrigerate for up to 24 hours. Bake when ready to serve, adding 2-3 extra minutes to the baking time if coming straight from the refrigerator.

→ What cheese alternatives work well?

Swiss cheese provides excellent melting properties and mild flavor that complements the beef. Mozzarella offers a creamier texture, while Gruyère adds a nutty richness that pairs beautifully with the au jus.

→ How do I keep the au jus hot during serving?

Keep the au jus warm in a small saucepan over the lowest heat setting, or transfer to a slow cooker set to warm. Individual ramekins can be refreshed as needed throughout your gathering.

→ What sides pair well with French dip sliders?

Classic options include crispy potato wedges, coleslaw, or a simple green salad with vinaigrette. The sliders also pair wonderfully with roasted vegetables or a light potato salad to balance the richness.

→ Can I freeze these sliders?

It's best to freeze them before baking. Assemble the sliders, wrap the baking sheet tightly with plastic wrap and foil, and freeze for up to 1 month. Thaw overnight in the refrigerator before baking as directed.