On a large work surface, slice the rolls in half through the middle. If they are attached as dinner rolls often are, you can leave them together in groups of six, and slice horizontally through each large mass of rolls.
1 dozen slider buns
On the bottom half of the rolls, layer on the ham. Add the cheese in another layer. On the top half of bread, spread the mustard and sprinkle the onions. Place the two halves together and wrap tightly with aluminum foil. At this point the rolls can be frozen, for up to 1 month. Alternatively, you can refrigerate the sandwiches up to a day in advance.
12 oz sliced ham, 6 oz swiss cheese slices, 2 tablespoon Dijon mustard, 2 green onion (chopped)
Thaw the rolls completely in the fridge prior to baking, if frozen. Preheat the oven to 350 degrees. Place the wrapped foil package in the oven and bake for about 25 minutes. At this point, slice through the rolls and separate. If not heated completely through, bake for another 10 minutes or until ham is hot, cheese is melted, and bread is crisp. Serve immediately.
Notes
Unbaked sliders can be assembled a day in advance or frozen for up to 1 month.Serving Suggestions: Serve these sliders with a side salad, soup, chips, or veggie dippers.Shop Your Kitchen:
You can use large French bread loaves instead of individual sandwiches. Wrap each individually in foil.
You can swap out the swiss cheese for pepper jack, mozzarella, or cheddar.
Got a different type of cooked meat on hand? Use that instead.
Slow cooker instructions: You can reheat these sandwiches in the slow cooker, for about four hours on LOW, turning once if possible.To Make a Meal Prep: I don’t recommend making these as a meal prep as it just won’t have the same texture reheated, however freezing the sandwiches prior to cooking is awesome!Freeze Extra for Later: I love freezing sandwiches to make into panini or grilled cheese.To make sandwiches to freeze: Assemble as directed. Wrap in foil and slip into a ziptop freezer bag.Make a Plan for Leftovers: Promptly store leftovers in an airtight container in the refrigerator, for up to 3 days. Reheat in the microwave or for best texture, the air fryer. If you store your leftovers in clear containers, they’re more likely to get eaten.