01 -
Preheat your oven to 350°F (175°C) to ensure even heating and a golden finish.
02 -
Line a 9x13 inch baking dish with aluminum foil, covering the sides. Lightly coat with non-stick spray to prevent sticking.
03 -
Remove the entire package of rolls and slice horizontally through the middle to create two connected slabs. Place the bottom slab in the prepared baking dish.
04 -
Layer half of the ham, followed by the Swiss cheese, and then the remaining ham over the bottom slab of rolls. Place the top slab back on, gently pressing down.
05 -
Melt butter in a microwave-safe bowl. Mix in mustard, Worcestershire sauce, minced onion, salt, and pepper until combined.
06 -
Pour the butter sauce evenly over the tops of the sliders, ensuring even distribution. Let sit for 5-10 minutes to absorb.
07 -
Cover the dish with foil and bake for 20 minutes to warm the sliders through and melt the cheese evenly.
08 -
Remove the foil and bake for an additional 5 minutes to brown the tops for a crisp finish.
09 -
If desired, sprinkle Parmesan cheese and parsley on top. Cut along the seams and serve warm while the cheese is melty.