Easy Baked Corned Beef Sliders (Reuben Style)

These baked corned beef sliders turn a deli classic into a buttery, melty pan of handheld sandwiches. You get all the tangy, salty, creamy notes of a Reuben without a griddle or a plate full of crumbs.

They come together in about 35 minutes and feed a crowd with one baking dish. Just layer, brush, and bake until the tops are golden and the Swiss pulls into ribbons.

Why These Sliders Work

The bottom bun soaks up just enough thousand island to stay soft, while the buttered top turns glassy and crisp. Every bite hits salty corned beef, sharp Swiss, and a little crunch from poppy seeds.

This is the version I keep coming back to for game days or a quick dinner. Leftovers reheat well in the oven, so you get a few more for lunch the next day, no mess.

Ingredients

• 12 slider rolls: the soft connected kind (Hawaiian rolls work beautifully)
• 1 lb thinly sliced corned beef: deli or leftover, not shaved too thin
• 8 oz Swiss cheese: sliced or a block cut into thin pieces
• 1 cup sauerkraut: drained and squeezed very dry
• 1/3 cup thousand island dressing: store-bought or homemade
• 4 tbsp unsalted butter: melted
• 1 tsp poppy seeds
• 1 tsp dried minced onion
• ½ tsp garlic powder

Variations / Substitutions

• Pastrami instead of corned beef: gives a peppery, smokier note that works just as well.
• Provolone or Havarti for the Swiss: a little milder and melts into a silkier layer.
• Russian dressing or spicy brown mustard: try if you want more heat or less sweetness.
• Rye slider buns: if you can find them, they make the Reuben flavor even more forward.
• No sauerkraut: use a thin layer of coleslaw for a fresher crunch (dress lightly).

For a hot beef sandwich with a completely different kick, try our Philly Cheesesteak Sliders.

How to Make Corned Beef Sliders

Step 1: Layer the Sliders

Without separating the individual rolls, slice the whole connected slab in half horizontally. Place the bottom half in a 9×13 baking dish. Arrange half of the Swiss evenly over the rolls, then layer on all of the 1 lb corned beef. Spread the drained sauerkraut over the meat, drizzle on the 1/3 cup thousand island dressing, and top with the remaining Swiss. Place the top half of the rolls on last, pressing down gently so everything nestles together.

The sauerkraut should feel dry to the touch, not dripping. Any liquid left in it will steam the bottom buns and leave them wet after baking.

Step 2: Brush with Seasoned Butter

Melt the 4 tbsp butter, then stir in the 1 tsp poppy seeds, 1 tsp dried minced onion, and ½ tsp garlic powder. Brush the mixture all over the tops of the rolls, letting a little drip down between the seams.

The butter pools in the crevices and the poppy seeds will toast into tiny speckled crunch. That is your cue that the topping will work its magic.

Step 3: Bake Until Crisp and Melty

Cover the dish loosely with foil and bake at 350°F (175°C) for 15 minutes. Uncover and bake another 10 minutes, until the tops are deep golden and cheese is visibly oozing at the edges.

You will hear the butter sizzle and smell a warm, oniony, beefy aroma. The cheese should stretch when you peek between two sliders.

Step 4: Slice and Serve

Let the whole pan sit for 5 minutes on the counter. Run a sharp knife through the slider seams, cutting them apart cleanly. Use a flat spatula to lift each slider onto a platter.

Serve them while they are still hot, with a small bowl of extra thousand island on the side for dipping. The tops stay shattery and crisp from the butter; the middles stay soft and rich.

Tips for Perfect Sliders

• Pick good corned beef.: Thicker deli slices (not paper-thin) give a meatier chew and won’t dissolve into the bun.
• Use a serrated knife.: A bread knife with a gentle sawing motion slices through the rolls without squishing the fillings.
• Assemble ahead.: You can build the sliders (without the butter topping) up to 4 hours in advance. Cover and chill, then add the butter right before baking.
• Broil for a darker top.: If the rolls look pale after baking, run them under the broiler for 60 seconds. Watch closely so the poppy seeds don’t burn.
• Leftover holiday corned beef?: Slice it thin against the grain and pile it on. The flavor is even deeper than deli meat.

Bake times can shift a little with the pan you use.

Storing and Reheating

• Refrigerate: leftover sliders in a sealed container for up to 3 days. They hold up better than you would expect.
• Reheating: works best in a 350°F (175°C) oven for about 8 to 10 minutes, or an air fryer at 325°F (160°C) for 5 minutes. The tops re-crisp and the cheese softens again.

What to Serve with Corned Beef Sliders

A proper dill pickle spear cuts through all that richness and cleans your palate between bites. A handful of kettle-cooked potato chips adds a salty, audible crunch that rounds out the soft slider. For a bigger spread, a simple cabbage slaw with a vinegar bite works beautifully alongside.

Frequently Asked Questions

My sliders fell apart when I tried to slice them. What went wrong?

They likely missed the resting step. Letting the pan sit 5 minutes lets the melted cheese set up a little, which binds everything together. A dull knife can also tear the bread instead of cutting cleanly.

Can I make these in an air fryer?

Yes, but you may need to work in batches. Build the sliders on a small foil tray that fits your basket, brush with butter, and air fry at 325°F (160°C) for 10 to 12 minutes until the tops crisp and the cheese melts.

Can I freeze baked corned beef sliders?

You can, but the texture of the buns will soften a bit after thawing. Wrap them individually in foil, freeze up to 2 months, and reheat from frozen in a 350°F (175°C) oven for 20 minutes. The tops won’t be as shattery, but the flavor is still there.

Corned Beef Sliders Recipe

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 25 minutes mins

Total Time 35 minutes mins

Servings: 12 servings

Calories: 265

Ingredients Method Notes

Ingredients

  

• 12 slider rolls
• 1 lb thinly sliced corned beef
• 8 oz Swiss cheese
• 1 cup sauerkraut, drained and squeezed dry
• 1/3 cup thousand island dressing
• 4 tbsp unsalted butter, melted
• 1 tsp poppy seeds
• 1 tsp dried minced onion
• ½ tsp garlic powder

Method

 

1. Slice the connected rolls in half horizontally. Place bottom half in a 9×13 baking dish. Layer with half the Swiss, all the corned beef, sauerkraut, dressing, remaining Swiss, and top half of rolls. Press gently.
2. Stir poppy seeds, minced onion, and garlic powder into the melted butter. Brush over the tops and let it drip into the crevices.
3. Cover with foil and bake at 350°F (175°C) for 15 minutes. Uncover and bake 10 more minutes until the tops are golden and cheese melts.
4. Let rest 5 minutes, then cut into individual sliders with a serrated knife and serve hot.

Notes

If you like a softer top, leave the foil on the whole time and skip the uncovered bake. For a crispier top, broil for the last minute, but do not walk away. Letting the sliders rest after baking is not optional; it keeps them from falling apart when you slice.