Preheat your oven to 350°F (175°C).
In a saucepan, whisk together the French onion soup, water, and Worcestershire sauce.
1 (10.25 ounce) can condensed French onion soup, 1/2 cup water, 1 tablespoon Worcestershire sauce
Bring the mixture to a simmer over medium heat.
Add the thinly sliced roast beef to the saucepan and heat it through, about 5-7 minutes.
1 pound thinly sliced roast beef
Optional Cheese: Slice Provolone cheese to top the slider buns
4 ounces provolone cheese, sliced (optional)
Slice the slider buns in half horizontally.
12 slider buns
Spoon the beef mixture onto the bottom halves of the slider buns.
12 slider buns, 1 pound thinly sliced roast beef
Top with slices of provolone cheese, if desired.
4 ounces provolone cheese, sliced (optional)
Place the top halves of the slider buns over the beef and cheese.
12 slider buns, 1 pound thinly sliced roast beef, 4 ounces provolone cheese, sliced (optional)
Melted Butter (Optional): Brush the tops of the slider buns with melted butter for a golden finish
12 slider buns, 2 tablespoons butter, melted (optional)
Cover the sliders with aluminum foil and bake for 10-12 minutes.
12 slider buns
In a small saucepan, combine the reserved beef juices and beef broth. Warm over medium heat.
Reserved juices from the beef after slicing, 1 cup beef broth
Slice the sliders and serve immediately with the warm au jus for dipping.
12 slider buns, Reserved juices from the beef after slicing, 1 cup beef broth
