Corned Beef Sliders Swiss

The smell of these sliders baking always takes me back to a rainy Sunday afternoon when my youngest announced she was suddenly hungry for something warm and cheesy. I rummaged through the fridge and found leftover corned beef from St. Patrick's Day, a package of Swiss cheese, and those sweet Hawaiian rolls that somehow disappear faster than any other bread in the house. Twenty minutes later, the kitchen smelled like butter and comfort, and these sliders were born from happy accident.

My brother-in-law once ate seven of these at a Super Bowl party and claimed they were the best thing hed ever tasted. Now he texts me three days before every family gathering, just to make sure these sliders are on the menu. The way the Swiss cheese melts into the corned beef while that buttery poppy seed topping gets all golden and crunchy—it creates something magical that nobody can resist.

Ingredients

• 12 slider buns: Hawaiian rolls add sweetness, but dinner rolls work beautifully too
• 450 g sliced corned beef: Deli thin slices layer perfectly and melt beautifully
• 12 slices Swiss cheese: Provolone creates a milder alternative if you prefer
• 120 g sauerkraut: Drain really well or skip altogether—both ways are delicious
• 60 g mayonnaise: Real mayo makes the sauce creamier than any substitute
• 60 g Dijon mustard: Adds the sharp kick that balances the rich cheese
• 1 tbsp ketchup: Just enough sweetness to round out the tangy mustard
• 1 tsp prepared horseradish: Optional, but adds lovely warmth if you like heat
• 1/2 tsp onion powder: Use fresh onion instead if you prefer more texture
• 60 g unsalted butter: Brushing this on top creates that irresistible golden crunch
• 1 tbsp poppy seeds: They add nutty flavor and the most beautiful speckled look
• 1 tbsp dried minced onion: Rehydrates slightly in the butter for amazing flavor
• 1 tsp Worcestershire sauce: The secret umami ingredient in the butter topping
• 1/2 tsp garlic powder: Just a subtle background note that brings everything together

Instructions

Get your oven ready:

Preheat to 180°C (350°F) and line your baking sheet with parchment paper for the easiest cleanup imaginable.

Whisk up that special sauce:

Combine the mayonnaise, Dijon mustard, ketchup, horseradish, onion powder and pepper in a small bowl until completely smooth.

Prep the bun bottoms:

Slice your slider buns horizontally and arrange only the bottom halves on your prepared baking sheet like little golden soldiers.

Start the layering:

Spread some sauce on each bottom bun, then pile on corned beef, sauerkraut if youre using it, and a slice of Swiss cheese.

Add the bun tops:

Spread a thin layer of sauce on the cut side of each top bun before placing it over the cheese.

Mix the butter topping:

Whisk together the melted butter, poppy seeds, dried onion, Worcestershire sauce and garlic powder until well combined.

Brush generously:

Pour that buttery mixture over the tops of your sliders, making sure every bun gets coated in that poppy seed goodness.

Bake covered first:

Cover loosely with foil and bake for 10 minutes so everything heats through and starts melting together.

Get them golden:

Remove the foil and bake another 5 minutes until the tops are golden brown and you can see the cheese bubbling at the edges.

Let them rest:

Cool for just a couple minutes before serving—this helps the cheese set slightly so they dont slide apart when you grab one.

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These sliders have become the thing my friends request most for potlucks and game days. Something about having your own perfect little sandwich, still warm from the oven with that buttery top and melty cheese middle, makes people so happy. I love watching the platter empty while everyones too busy enjoying to talk much.

Make-Ahead Magic

Assemble the entire tray up to the point of baking, then cover tightly with foil and refrigerate for up to 6 hours. When ready to bake, let them sit at room temperature while the oven preheats—about 15 minutes—then brush with the butter mixture and bake as directed. The flavors actually meld together even better this way.

Reuben Remix

For a classic Reuben twist, use Thousand Island or Russian dressing instead of the homemade sauce and try rye slider buns if you can find them. Add thin pickle slices right on top of the corned beef before the cheese for extra tang. The sauerkraut becomes essential here instead of optional.

Serving Suggestions

These sliders shine alongside simple sides that dont compete for attention. Think coleslaw, potato salad, or even just some fresh fruit for a lighter balance. For drinks, cold beer cuts through the richness beautifully.

• Cut the assembled slab with a serrated knife for the cleanest edges
• Keep a small bowl of extra sauce on the side for dipping enthusiasts
• Leftovers reheat surprisingly well in a 160°C (325°F) oven for about 8 minutes

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Theres something so satisfying about food that brings people together around the kitchen island, reaching for seconds and thirds. Hope these sliders become part of your familys happy moments too.

Recipe Questions & Answers

→ What type of buns work best for these sliders?

Soft Hawaiian or dinner rolls are ideal as they hold the fillings well and provide a slightly sweet contrast to the savory corned beef.

→ Can I prepare the sliders ahead of time?

Yes, the sliders can be assembled in advance and baked just before serving to ensure they're warm and cheesy.

→ Is the sauerkraut necessary?

Sauerkraut is optional but adds a pleasant tang that complements the richness of the cheese and beef.

→ How is the tangy sauce made?

The sauce combines mayonnaise, Dijon mustard, ketchup, horseradish, onion powder, and black pepper for a balanced, flavorful spread.

→ What gives the sliders their golden topping?

A mixture of melted butter, poppy seeds, dried onion, Worcestershire sauce, and garlic powder is brushed on top before baking to create a flavorful, golden crust.