- Preheat the oven: Set to 350°F (175°C).
- Caramelize the onions: In a skillet, melt butter over medium heat. Add sliced onions, thyme, garlic, sugar, salt, and pepper. Cook slowly, stirring occasionally, for 15–20 minutes until onions are golden and soft.
- Assemble the sliders: Slice the slider buns in half horizontally. Layer the bottom buns with caramelized onions, then add roast beef and Swiss cheese. Place the top buns over the sandwiches.
- Bake the sliders: Place assembled sliders in a baking dish. Cover with foil and bake for 10–15 minutes until cheese is melted and sliders are heated through.
- Prepare the au jus: In a small saucepan, combine French onion soup and au jus mix. Heat over medium, stirring occasionally until warm.
- Serve: Serve sliders hot with small bowls of au jus for dipping.
Serving and Storage
French Dip Sliders are best served immediately while the cheese is melty and the buns are warm. Pair them with a simple salad, fries, or chips for a complete meal. Leftovers can be stored in an airtight container in the refrigerator for up to three days. Reheat gently in the oven or microwave.
Tips:
- Use fresh thyme rather than dried for a brighter flavor.
- Cook onions slowly to avoid burning and achieve a sweet, caramelized flavor.
- Toast the buns lightly for extra texture and flavor.
- Slice sliders evenly to ensure each bite has balanced ingredients.
- Keep the au jus warm for dipping right before serving for the best experience.
Conclusion:
French Dip Sliders are a crowd-pleasing, flavor-packed treat that combines tender roast beef, melted Swiss cheese, and caramelized onions with a rich, savory dipping sauce. Perfect for casual gatherings, game nights, or quick weeknight dinners, this recipe elevates simple ingredients into a gourmet-style slider everyone will love.
FAQ:
Can I use pre-cooked roast beef?
Yes, deli roast beef works perfectly and saves time.
Can I prepare the sliders ahead of time?
Yes, assemble and refrigerate them for up to a day. Bake and serve just before eating.
What cheese works best?
Swiss cheese is traditional, but provolone or mozzarella can also be used.
Can I make the au jus from scratch?
Yes, simmer beef broth with caramelized onions and seasonings for a homemade version.
Are these sliders freezer-friendly?
Yes, assemble without baking, wrap tightly, and freeze. Bake directly from frozen, adding extra time as needed.