01 -
Preheat the oven to 350°F and choose a baking sheet or dish that supports all twelve rolls.
02 -
Split the connected rolls horizontally with a serrated knife, keeping the top slab and bottom slab intact.
03 -
Lay the bottoms on the pan and distribute twelve ounces of roast beef and eight ounces of Swiss evenly, including the corners.
04 -
Replace the top slab without pressing the filling into a dense layer.
05 -
Melt the butter and stir in garlic powder, onion powder and Worcestershire sauce.
06 -
Brush the seasoned butter evenly over the roll tops instead of pooling it in one spot.
07 -
Cover loosely with foil and bake about 15–20 minutes, checking the middle filling. Uncover briefly for browning if needed once hot; extend heating and protect the bread when the center remains cool.
08 -
Warm the one cup of already prepared au jus in a separate saucepan following its product directions.
09 -
Cut into twelve sliders, support their bases when lifting and serve the dip alongside. Follow the deli-meat guidance above for higher-risk diners.