Mini sandwiches featuring tender roast beef and melted cheddar cheese on buttery slider rolls, perfect for appetizers or a crowd-pleasing snack.

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Preheat oven to 350 °F (175 °C). Grease a 9×13″ baking dish.
Slice the slider rolls horizontally, keeping tops and bottoms together.
Place bottom halves in the baking dish.
Layer roast beef evenly over the bottom rolls.
Top each with a half slice of cheddar cheese.
Place roll tops back on.
In a small bowl, whisk melted butter, Dijon mustard, Worcestershire sauce, garlic powder, onion powder, salt, and pepper.
Brush the butter mixture generously over the top of the rolls.
Cover the dish loosely with foil.
Bake for 10 minutes, then remove foil and bake an additional 5 minutes or until cheese is melted and tops are lightly browned.
Remove from oven and let rest 2–3 minutes before serving.

Use Swiss cheese or pepper jack for a different flavor profile.
Add sliced pickles, caramelized onions, or horseradish sauce for extra zing.
Sliders can be assembled ahead and refrigerated; add butter mixture just before baking.
Leftovers can be reheated under the broiler for 1–2 minutes.