
Mouthwatering French Dip Sliders: the ultimate party appetizer or an easy, satisfying meal. These sliders combine tender roast beef, melted cheese, and crispy fried onions on soft buttery rolls, finished with a savory au jus for dipping. They’re simple to prepare, travel well for potlucks, and are always a crowd-pleaser.
The recipe below is straightforward and reliable. It uses store-bought ingredients for convenience while delivering bold, layered flavors: buttery toasted rolls, warm roast beef briefly dipped in au jus, two kinds of melted cheese, and a crunchy onion topping. A brushed garlic-onion butter on top of the rolls adds an irresistible aroma and golden finish.

Why You Will Love This Recipe:
These French dip sliders are versatile and perfect for many occasions. Serve them as an appetizer at parties, a hearty lunch, a quick weeknight dinner, or a contribution to a potluck. They’re easy to scale up or down, assemble quickly, and can be kept warm in a low oven for serving. The contrast of juicy beef and au jus with melted cheese and crisp fried onions creates texture and depth in every bite, and the toasted buttery rolls tie it all together.
Ingredients:
- 1 (12-count) package King’s Hawaiian savory butter rolls (or other slider rolls)
- 2–3 tablespoons butter, for spreading
- 1 (1 oz) package au jus gravy mix
- 2 cups water
- 1 lb sliced rare deli roast beef
- 6 slices sharp cheddar cheese
- 3 oz French’s crispy fried onions
- 6 slices mozzarella cheese
- 2 tablespoons butter, melted (for brushing)
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
Instructions:

1. Preheat your oven to 375°F (190°C). While the oven heats, split the slider roll package in half horizontally so you have a top and bottom sheet of rolls. Generously spread 2–3 tablespoons of butter across the bottom half to ensure a rich, toasty base.
2. Place the buttered bottom half in an oven-safe baking dish and bake for about 7 minutes, or until the rolls develop a light golden crust. This initial toasting adds flavor and helps prevent sogginess once the fillings are added.

3. While the rolls toast, prepare the au jus. In a small saucepan bring 2 cups of water to a simmer, whisk in the au jus gravy mix until smooth, and keep it hot. Do not overboil; you want a warm, flavorful dipping sauce.
4. Briefly dip portions of the deli roast beef into the hot au jus for about 1 minute to warm and slightly flavor the meat. Avoid leaving the slices in longer, which can dry or toughen them. Remove and set the beef aside on a plate.

5. When the bottom rolls are toasted, remove the tray from the oven. Layer 6 slices of sharp cheddar evenly across the rolls, then distribute the warmed roast beef over the cheese. Sprinkle the crispy fried onions over the beef for crunch, and finish with 6 slices of mozzarella to create a melty top layer.

6. Place the top sheet of rolls onto the assembled sliders. In a small bowl combine 2 tablespoons melted butter with 1 teaspoon garlic powder and 1 teaspoon onion powder. Brush this seasoned butter evenly over the top of the rolls for a golden, flavorful finish.
7. Return the assembled sliders to the oven and bake an additional 5–7 minutes, or until the cheese melts and the tops turn golden brown. Keep an eye on them to avoid over-browning.

8. Remove from the oven and let the sliders rest for a minute, then slice between each roll to create individual servings. Serve warm with bowls of extra hot au jus for dipping and, if desired, a side of creamy horseradish sauce for a zesty contrast. The dipping au jus elevates the sliders by adding moisture and deep savory flavor with every bite.

If you make this recipe, please leave a comment and a rating—your feedback is appreciated and helps others discover this easy favorite.
French Dip Sliders
Ingredients
- 12 slider rolls (King’s Hawaiian or similar)
- 2–3 tbsp butter for spreading
- 1 oz au jus gravy mix
- 2 cups water
- 1 lb sliced rare deli roast beef
- 6 slices sharp cheddar
- 3 oz crispy fried onions
- 6 slices mozzarella
- 2 tbsp melted butter for brushing
- 1 tsp garlic powder
- 1 tsp onion powder
Instructions
- Preheat oven to 375°F. Split rolls and butter the bottom half.
- Toast the bottom rolls for about 7 minutes until lightly golden.
- Prepare au jus with 2 cups water and the gravy mix; keep warm.
- Dip roast beef briefly (about 1 minute) in the au jus, then set aside.
- Layer cheddar, warm roast beef, crispy onions, and mozzarella on the toasted bottom rolls.
- Top with the roll tops, brush with melted butter mixed with garlic and onion powder.
- Bake 5–7 minutes until cheese melts and tops are golden.
- Slice into individual sliders and serve warm with extra au jus and optional horseradish sauce.