Melty Roast Beef French Dip Sliders: A Crowd-Pleasing Favorite

There is nothing quite as comforting as a warm, savory sandwich, and these French Dip Sliders bring all the classic flavors of a gourmet deli right to your kitchen. With tender roast beef, melty provolone, and rich caramelized onions tucked into soft rolls, they are the perfect crowd-pleaser for game days, family gatherings, or a simple weekend treat. The real magic happens when you dip these toasted sandwiches into the homemade garlic-infused au jus, making every bite succulent and full of flavor.

Recipe Details

• Yields: 12 sliders
• Prep Time: 10 minutes
• Cook Time: 35 minutes
• Total Time: 45 minutes

Ingredients

• 5 Tbsp. unsalted butter, divided
• 1 large yellow onion, thinly sliced
• 2 thyme sprigs, plus 1/2 tsp. chopped fresh thyme leaves
• Kosher salt
• Freshly ground black pepper
• 12 slider buns, halved
• 1 lb. thinly sliced deli roast beef
• 12 slices provolone
• 1 tsp. chopped fresh parsley, plus more for serving
• 1/4 tsp. garlic powder
• 1 Tbsp. clove garlic, finely chopped
• 1 1/2 cups low-sodium beef broth
• 1 Tbsp. Worcestershire sauce

Instructions

1. Begin by preheating your oven to 350°F. Melt 2 tablespoons of butter in a large skillet over medium-high heat. Add the sliced onions and the thyme sprigs to the pan, seasoning them with salt and pepper. Cook the onions, stirring occasionally, until they reach a deep, golden caramelization, which should take about 30 to 40 minutes. Once finished, remove and discard the thyme sprigs.
2. Arrange the bottom halves of the slider buns across a large baking sheet. Layer the roast beef evenly over the bread, followed by the provolone slices and the caramelized onions. Place the top halves of the buns on top to finish the sandwiches.
3. In a small microwave-safe bowl, melt another 2 tablespoons of butter. Use a pastry brush to coat the tops of the buns with the melted butter. Lightly sprinkle the tops with garlic powder and parsley, then add a pinch of salt.
4. Place the sliders in the oven and bake for 10 to 15 minutes, or until the sandwiches are heated through and the cheese has completely melted.
5. While the sliders bake, prepare the dipping sauce. In the same skillet used for the onions, melt the remaining 1 tablespoon of butter over medium heat. Add the chopped garlic and sauté until fragrant, about 1 minute. Pour in the beef broth and Worcestershire sauce, then stir in the chopped thyme. Season with salt and pepper to taste. Bring the liquid to a simmer and let it cook, stirring now and then, for about 10 minutes until it has slightly reduced.
6. Once the sliders are ready, move them to a serving platter and garnish with fresh parsley. Serve the sandwiches warm with the au jus in small bowls on the side.

Nutrition Information

Whether you are hosting a party or just looking for a fun twist on dinner, these sliders are sure to disappear fast!