Corned Beef Cheese Sliders

Golden-brown Corned Beef Sliders with Cheese on a platter, with melted Swiss and tangy mustard. Pin It
Golden-brown Corned Beef Sliders with Cheese on a platter, with melted Swiss and tangy mustard. | pinnerplates.com

These sliders feature thinly sliced corned beef layered with Swiss cheese and tangy mustard-mayo spread on soft slider buns. Topped with pickles and optional red onion, they're brushed with melted butter and sprinkled with poppy seeds before baking to a golden finish. Perfect for quick appetizers or casual gatherings, they balance savory flavors and tender textures. Easily customizable with cheddar or provolone and ideal for pairing with a crisp lager or light wine.

My brother showed up at my door last Sunday with three pounds of corned beef and a challenge to use it before his dinner party that evening. We stood in my tiny kitchen, arguing over whether sliders felt too casual for his fancy friends, until I started slicing buns and the whole apartment filled with that unmistakable savory smell that makes everyone hungry.

Last New Years Eve, I made four dozen of these for a crowd that kept drifting into the kitchen to watch them come out of the oven. Someone actually cheered when the cheese started bubbling through the buns.

Ingredients

  • 12 slider buns: Brioche adds a subtle sweetness that balances the salty corned beef beautifully
  • 400 g cooked corned beef: Ask your deli counter to slice it paper thin, it makes all the difference in texture
  • 12 slices Swiss cheese: Cheddar works too but Swiss melts into those gorgeous puddles that everyone fights over
  • 3 tbsp mustard and mayonnaise: Mix these together before spreading for an even tangy layer on every bun
  • 12 dill pickle slices: Do not skip these, they cut through the richness like magic
  • 2 tbsp melted butter: Brush this generously on the tops for that golden crunch that makes people grab seconds

Instructions

Get your oven ready:
Preheat to 180°C and line a baking sheet with parchment paper to save yourself cleanup time later
Prep the bun bottoms:
Slice the buns in half and arrange the bottom pieces on your prepared baking sheet like a neat little army
Spread the base layer:
Smear each bottom bun with a thin layer of mayonnaise and mustard mixed together
Build the layers:
Pile on the sliced corned beef, tuck a cheese slice over each one, then crown with a pickle and onion if you are using them
Top and brush:
Place the bun tops on, then brush each one generously with melted butter and sprinkle with poppy seeds
Bake until golden:
Cover loosely with foil and bake 10 minutes, then uncover and bake 5 more minutes until the cheese is melted and buns are golden
Freshly baked Corned Beef Sliders with Cheese are stacked high, ready to serve at a party. Pin It
Freshly baked Corned Beef Sliders with Cheese are stacked high, ready to serve at a party. | pinnerplates.com

My friend Sarah still talks about the time I accidentally bought regular sized buns and made sandwich sized versions instead. We ate them like sloppy sandwiches on the couch and honestly, they were just as good.

Make Ahead Magic

Assemble these completely up to 4 hours before baking, cover tightly with foil, and keep them in the refrigerator. Add the melted butter topping just before they go in the oven.

The Perfect Cheese Pull

Slice your cheese slightly larger than the buns so it oozes over the edges while baking. Those crispy cheese edges are what people remember most.

Serving Strategy

Set up a little station with extra mustard, pickles, and napkins because these can get gloriously messy.

  • Use a sharp serrated knife to cut them apart without squishing the tops
  • Stack them on a wooden board for that rustic party look
  • Keep them warm in a 150°C oven if people are grazing
A close-up of Corned Beef Sliders with Cheese features toasted buns and melty cheese layers. Pin It
A close-up of Corned Beef Sliders with Cheese features toasted buns and melty cheese layers. | pinnerplates.com

Watch how fast these disappear and you will understand why they are my go to for every gathering now.

Recipe Questions & Answers

Swiss cheese is traditional for its mild nutty flavor, but cheddar or provolone are great alternatives that melt well.

Yes, assemble and refrigerate them for a few hours before baking to maintain freshness and flavor.

Brushing the tops with melted butter before baking helps keep buns moist and adds a rich finish.

A combination of mayonnaise and Dijon mustard adds creamy tanginess, while pickles give a pleasant crunch and acidity.

Try adding sauerkraut for a Reuben-style variation or swap cheeses for different flavor profiles.

Corned Beef Cheese Sliders

Mini sandwiches featuring tender corned beef, melted cheese, and tangy mustard mayo on soft slider buns.

Prep 15m
Cook 15m
Total 30m
Servings 12
Difficulty Easy

Ingredients

Breads

  • 12 slider buns or mini brioche buns

Meats

  • 14 oz cooked corned beef, thinly sliced

Cheeses

  • 12 slices Swiss cheese (or cheddar, if preferred)

Condiments & Toppings

  • 3 tbsp Dijon or yellow mustard
  • 3 tbsp mayonnaise
  • 12 small dill pickle slices
  • 1 small red onion, thinly sliced (optional)
  • 2 tbsp unsalted butter, melted
  • 1 tsp poppy seeds (optional, for topping)

Instructions

1
Preheat Oven: Preheat the oven to 350°F. Line a baking sheet with parchment paper.
2
Prepare Buns: Slice the slider buns in half horizontally. Place the bottom halves on the prepared baking sheet.
3
Add Condiments: Spread a thin layer of mayonnaise and mustard on the bottom halves of the buns.
4
Layer Meat and Cheese: Layer sliced corned beef evenly over each bun. Top with a slice of cheese.
5
Add Toppings: Add a pickle slice and optional red onion to each slider.
6
Assemble and Top: Place the top halves of the buns on each slider. Brush the tops with melted butter and sprinkle with poppy seeds if using.
7
Bake: Cover the sliders loosely with foil and bake for 10 minutes. Remove the foil and bake for another 5 minutes, until the cheese is melted and the tops are golden.
8
Serve: Serve immediately while warm.
Additional Information

Equipment Needed

  • Baking sheet
  • Parchment paper
  • Sharp knife
  • Pastry brush
  • Aluminum foil

Nutrition (Per Serving)

Calories 240
Protein 12g
Carbs 23g
Fat 11g

Allergy Information

  • Contains: Wheat (buns), Milk (cheese, butter), Egg (mayonnaise, if used). May contain: Mustard, depending on the brand. Check all labels for hidden allergens and cross-contamination warnings.
Danielle Foster

Sharing simple, tasty recipes and kitchen tips for everyday home cooks.