Preheat your oven to 350°F (175°C). Lightly grease a 9x13-inch baking dish with nonstick spray or butter to keep the sliders from sticking.
Slice the rolls as a slab. Without separating the rolls, run a serrated knife horizontally through the middle to create a top and bottom layer. Place the bottom half in your baking dish.
Layer the cheese first. Add a single layer of cheese over the bottom rolls, all the way to the edges.
This creates a barrier so the rolls don’t get soggy from the meat or toppings.
Add the deli meat. Fold or shingle the ham (and turkey, if using) in even layers. Don’t pack it too high, but make sure there’s meat in every bite.
Top with more cheese. Add another light layer of cheese for extra melt and stability.
Add extras, if you like. A few thin pickle slices, caramelized onions, or banana peppers add great texture and flavor. Keep layers thin so the sliders press together well.
Place the top slab of rolls over the filling and gently press to help everything settle.
Make the butter topping. In a small bowl, whisk the melted butter, Dijon, Worcestershire, honey (if using), poppy seeds, garlic powder, onion powder, salt, and pepper until smooth.
Brush the tops generously. Use a pastry brush or spoon to coat the rolls with the butter mixture.
Let a little drip down the sides so it flavors the edges too.
Tent with foil (not tight—leave a bit of space so it doesn’t stick to the tops) and bake for 12–15 minutes until the cheese is melted.
Uncover and finish baking for another 5–7 minutes, until the tops are golden and slightly crisp.
Rest briefly, then slice. Let the sliders sit for 3–5 minutes so the cheese sets slightly. Slice along the roll lines with a serrated knife and serve warm.