Hawaiian Sandwiches on King’s Hawaiian Rolls Recipe

These Hawaiian sandwiches are American-style baked sliders made with soft, sweet rolls, savory ham, melted Swiss cheese, and a buttery mustard topping. They’re easy to assemble as one connected tray, then slice into individual portions for a casual lunch, game-day spread, or potluck; versions vary by household, and they aren’t a traditional Hawaiian dish.

Ingredients

1 package of 12 sweet Hawaiian rolls, about 12 oz (340 g), kept connected and sliced horizontally
12 oz (340 g) thinly sliced cooked ham
8 oz (225 g) Swiss cheese, thinly sliced
4 tbsp (57 g) unsalted butter
1 tbsp (15 ml) Dijon mustard
2 tsp (10 ml) Worcestershire sauce
1 tbsp (9 g) poppy seeds
½ tsp (1.5 g) onion powder
¼ tsp (0.75 g) garlic powder
⅛ tsp (0.3 g) freshly ground black pepper
½ cup (75 g) thinly sliced dill pickles, patted dry, optional

Instructions

Heat the oven and prepare the rolls. Set a rack in the center of the oven and preheat to 350°F (177°C). Line a 9-by-13-inch (23-by-33-cm) baking pan with parchment, or lightly grease it. Without separating the rolls, use a long serrated knife to cut the whole slab horizontally. Lift off the top slab and set it aside. If the rolls are very soft, make shallow sawing strokes rather than pressing down; this helps keep the bottom halves level.
Layer the filling. Set the bottom slab in the pan. Arrange half the Swiss over the rolls, overlapping the slices to cover the surface. Add the ham in loose, even folds rather than piling it into the middle; that makes the sandwiches easier to bite and helps the filling warm evenly. Add the optional pickles in a single layer, then cover with the remaining Swiss. Place the top slab back on, lining up the edges. Keep the cheese close to the bread’s edges so it can melt around the filling and help hold the sliders together.
Mix the topping. Melt the butter in a small saucepan over low heat or in a microwave-safe bowl. Stir in the Dijon, Worcestershire sauce, poppy seeds, onion powder, garlic powder, and black pepper. Whisk until the mixture looks evenly combined. If the butter begins to separate while you work, give it another stir just before brushing it on.
Top and cover. Brush the seasoned butter evenly over the roll tops, including around the edges. Some will run down the sides, which is fine, but avoid pouring it all into one spot. Cover the pan loosely with foil. The foil keeps the tops from browning too quickly while the cheese melts and the ham heats through.
Bake until hot and melty. Bake, covered, for 15 minutes. Remove the foil and bake for another 10 minutes, until the tops are golden and the cheese is melted. Check the center of the filling with a food thermometer. Because the cooked ham is being heated in the assembled sandwiches, the USDA FSIS safe minimum for reheated leftovers is 165°F (74°C); if the center has not reached that temperature, bake in 2-minute increments and check again.
Rest, cut, and serve. Let the pan stand for 5 minutes so the cheese settles and the rolls are easier to separate. Cut along the roll seams with a sharp knife, or use a serrated knife if the rolls have joined together while baking. Serve warm, while the tops are still lightly crisp and the centers are gooey.

Tips

Keep the rolls connected for assembly. Cutting the slab in half horizontally, instead of pulling the rolls apart first, makes it much easier to build an even layer of filling. If the package contains perforations, you can still keep the rolls joined until after baking.
Dry wet add-ins. Pickles add a sharp, tangy contrast to the sweet bread, but excess brine can make the bottom layer soggy. Pat pickle slices dry, and use a modest single layer. The same rule applies to other moist additions such as sliced tomatoes.
Adjust the topping to taste. Dijon and Worcestershire bring savory depth without making the topping taste strongly of either one. For a gentler flavor, use 2 teaspoons (10 ml) Dijon instead of 1 tablespoon; for extra tang, add 1 teaspoon (5 ml) more. Stir the butter mixture again before brushing if it separates.
Assemble ahead, but bake shortly before serving. You can layer the rolls and filling, cover the pan, and refrigerate it for up to 8 hours before baking. Keep the butter topping separate and brush it on just before the pan goes into the oven. A chilled pan may need a few extra minutes of baking, so use the thermometer rather than relying only on the clock.

Serving Suggestions

Serve the sliders warm as a main dish with a simple green salad, crunchy coleslaw, or cut vegetables and dip. For a party table, pair them with potato chips, oven fries, or a fruit platter; the sweet rolls and salty ham work especially well alongside crisp, tart sides. Because each roll makes a small portion, plan on one or two sliders per person depending on what else is being served. If the sandwiches are part of a larger buffet, cut them apart just before guests arrive and leave them on a warm platter rather than letting them sit in a hot oven, where the bread can dry out.

Variations

Use another cheese: Provolone gives a mild, stretchy melt, while cheddar tastes sharper and more pronounced. If using a strong cheese, you may prefer to reduce the amount slightly so it doesn’t overwhelm the ham. Thin slices melt more evenly than thick ones.

Make them mustard-free: Leave out the Dijon and add 1 teaspoon (5 ml) apple cider vinegar to the melted butter for a little brightness. The topping will lose the mustard’s peppery tang, but still season the bread well.

Add pineapple: For a sweet-and-savory variation, use ½ cup (80 g) well-drained crushed pineapple spread in a very thin layer over the ham. Press it in a sieve or pat it dry first; excess juice can make the rolls wet. This is an optional flavor choice rather than a required ingredient.

Make a vegetarian tray: Replace the ham with 10 oz (280 g) sautéed mushrooms and onions, cooled and drained of excess liquid. Season them lightly, since the butter topping and cheese already add salt. Keep the same baking method, and check that the center is hot before serving.

Storage and Reheating

These sliders are best just after baking, when the rolls are tender and the cheese is soft. Refrigerate leftovers within 2 hours of baking, in a covered container or wrapped tightly, and eat them within 3 to 4 days. If you expect leftovers, it is useful to cut only the portions you plan to serve; the uncut slab tends to hold together better in storage. Do not leave the sandwiches at room temperature for more than 2 hours.

For the best texture, reheat individual sliders in a 325°F (163°C) oven for about 8 to 12 minutes, loosely covered with foil. Remove the foil for the last 2 minutes if you want to refresh the tops. Reheat leftovers to 165°F (74°C), checking the center with a food thermometer. A microwave works for a quick portion, though the bread will be softer: heat in short bursts of 30 seconds until steaming hot, then verify the center temperature. You can freeze cooled sliders, wrapped airtight, for up to 2 months for best quality; thaw overnight in the refrigerator and reheat as above.

Frequently Asked Questions

Can I make Hawaiian sandwiches the day before?
Yes. Assemble the bread, ham, and cheese, cover the pan, and refrigerate it for up to 8 hours. Keep the butter topping in a separate covered container and brush it over the rolls just before baking. Baking straight from the refrigerator can take a little longer, so check the center temperature before serving.

Should I separate the rolls before baking?
No. Keep the rolls in one slab while you slice them horizontally, fill them, and bake them. They stay neater and are less likely to tip or dry out. After baking and resting, cut or pull them apart along the seams to serve.

Can I use a different kind of ham?
Yes. Thinly sliced deli ham, leftover baked ham, or a less-sweet smoked ham all work. If using leftover ham, slice or chop it thinly so the layers heat evenly. Avoid very thick pieces, which can make the sliders bulky and slow to warm through.

Why are my bottoms soggy?
Common causes are wet pickles, too much filling, or a generous puddle of butter collecting beneath the rolls. Pat add-ins dry, keep the ham in an even layer, and brush the topping across the tops instead of pouring it into one place. If your pan is very full, set it on a baking sheet to catch any butter that bubbles over.

Can I leave out the poppy seeds?
Yes. They add a slight crunch and familiar savory topping, but the sandwiches will still work without them. You can omit them or replace them with an equal amount of sesame seeds. If you use salted butter, taste the topping before adding any extra salt; this recipe does not require added salt.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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