Corned Beef Sliders Mustard

Golden Corned Beef Sliders with Mustard are arranged on a tray with melted Swiss cheese and poppy seeds. Save
Golden Corned Beef Sliders with Mustard are arranged on a tray with melted Swiss cheese and poppy seeds. | flavormonk.com

This dish features tender slices of corned beef layered on soft slider buns, complemented by zesty mustard and optional Swiss cheese and shredded cabbage or sauerkraut. A flavorful butter mix with poppy seeds, garlic, and onion powders is brushed over the buns before baking, creating a golden, savory finish. Ideal as a satisfying snack or appetizer, it's simple to prepare and perfect for gatherings or casual meals.

The smell of melting butter and garlic always brings me back to my friend's Super Bowl party last year, where she served these sliders fresh from the oven. They disappeared in under ten minutes. I've been making them ever since, tweaking the butter topping until it creates that irresistible golden crust.

I made these for a Sunday gathering after St. Patricks Day when I had leftover corned beef taking up fridge space. My brother-in-law, who claims he hates mustard, ate four of them. Now he requests them every time he visits.

Ingredients

  • Cooked corned beef: Thinly slicing the beef yourself gives you control over thickness and ensures tender bites
  • Slider buns: Soft dinner rolls work beautifully but avoid hamburger buns which are too thick
  • Swiss cheese: The mild nuttiness pairs perfectly without overpowering the beef
  • Sauerkraut or cabbage: Adds a bright crunch that cuts through the rich meat and cheese
  • Mustard: Whole-grain mustard gives little pops of flavor but yellow mustard works wonderfully
  • Butter mixture: This trio of poppy seeds, garlic powder and onion powder creates restaurant-style flavor

Instructions

Prepare your oven and pan:
Preheat to 180°C (350°F) and line a baking sheet with parchment paper for easy cleanup
Assemble the base:
Arrange bottom bun halves on your prepared baking sheet and spread with mustard and optional mayonnaise
Layer the fillings:
Add sliced corned beef followed by Swiss cheese and a sprinkle of sauerkraut or shredded cabbage
Close them up:
Place the top buns over your fillings to create 12 neat sliders
Make the butter topping:
Whisk melted butter with poppy seeds, garlic powder and onion powder until combined
Brush generously:
Coat the tops of your buns with the butter mixture, getting into all those nooks and crannies
Bake covered first:
Cover with foil and bake for 7 minutes to melt the cheese and heat everything through
Finish golden:
Remove foil and bake 3 more minutes until the tops are beautifully golden and crisp
Freshly baked Corned Beef Sliders with Mustard feature tender corned beef and sauerkraut on soft slider buns. Save
Freshly baked Corned Beef Sliders with Mustard feature tender corned beef and sauerkraut on soft slider buns. | flavormonk.com

My aunt started bringing these to family reunions instead of her usual potato salad, and now they're the most anticipated dish on the table. Last summer, my cousin specifically requested them for his birthday instead of cake.

Make Ahead Strategy

You can assemble these sliders up to 8 hours before baking. Cover them tightly with foil and store in the refrigerator. Brush with the butter mixture just before baking for the freshest taste and texture.

Cheese Options

While Swiss is traditional, cheddar adds a sharp bite that many prefer. Provolone melts beautifully and creates that gorgeous cheese pull effect in photos. Havarti is incredibly creamy if you want something milder.

Serving Suggestions

These sliders pair perfectly with classic sides that round out a casual spread. Keep sides simple since the sliders are the star.

  • Serve with a bowl of potato chips or pretzels for that satisfying crunch
  • A simple green salad with vinaigrette helps cut through the richness
  • Pair with cold beer or cider for the ultimate party combination
Close-up of Corned Beef Sliders with Mustard stacked on parchment, ready to serve for game day parties. Save
Close-up of Corned Beef Sliders with Mustard stacked on parchment, ready to serve for game day parties. | flavormonk.com

Theres something so satisfying about pulling these warm sliders apart and watching everyone reach for seconds. Enjoy every bite.

Recipe FAQs

Small slider buns or dinner rolls provide the perfect soft base to hold the corned beef and toppings.

While corned beef is traditional, you can experiment with roast beef or pastrami for a similar texture and flavor.

Mustard adds a zesty kick that balances the richness, but whole-grain or yellow mustard can be swapped or omitted according to taste.

Swiss cheese, shredded cabbage or sauerkraut add layers of flavor and texture, while pickles or caramelized onions can also complement nicely.

After layering fillings, brush the tops with melted butter mixed with poppy seeds, garlic, and onion powder, then bake until golden and cheese melts for a flavorful crust.

Yes, you can assemble them earlier and refrigerate before baking, then warm through just before serving to retain freshness.

Corned Beef Sliders Mustard

Delicious corned beef on soft slider buns with mustard and optional toppings perfect for sharing.

Prep 15m
Cook 10m
Total 25m
Servings 12
Difficulty Easy

Ingredients

Meats

  • 1 lb cooked corned beef, sliced thin

Bread

  • 12 slider buns or small dinner rolls, halved

Cheese (optional)

  • 6 slices Swiss cheese, halved (optional)

Vegetables

  • 1 cup shredded cabbage or sauerkraut (optional)

Condiments

  • 6 tbsp yellow or whole-grain mustard
  • 2 tbsp mayonnaise (optional)

Butter Topping

  • 3 tbsp unsalted butter, melted
  • 1 tsp poppy seeds (optional)
  • 1 tsp garlic powder
  • 1 tsp onion powder

Instructions

1
Preheat Oven: Preheat oven to 350°F. Line a baking sheet with parchment paper.
2
Prepare Buns: Slice slider buns in half horizontally. Arrange bottom halves on prepared baking sheet.
3
Spread Condiments: Spread mustard evenly over bottom halves of buns. Add mayonnaise if using.
4
Layer Fillings: Layer sliced corned beef over mustard. Top with Swiss cheese and shredded cabbage or sauerkraut if desired.
5
Assemble Sliders: Place top halves of buns over fillings to complete sliders.
6
Prepare Butter Mixture: Mix melted butter with poppy seeds, garlic powder, and onion powder in small bowl.
7
Apply Butter Topping: Brush tops of buns generously with butter mixture.
8
Bake Covered: Cover sliders with foil and bake for 7 minutes.
9
Bake Uncovered: Remove foil and bake for additional 3 minutes until tops are golden and cheese is melted.
10
Serve: Remove from oven, let cool slightly, and serve warm.
Additional Information

Equipment Needed

  • Baking sheet
  • Parchment paper
  • Small mixing bowl
  • Pastry brush
  • Sharp knife

Nutrition (Per Serving)

Calories 230
Protein 12g
Carbs 22g
Fat 10g

Allergy Information

  • Contains wheat (buns)
  • Contains milk (cheese, butter)
  • Contains eggs (mayonnaise, if used)
  • Contains mustard
Rhea Kapoor

Everyday recipes and cooking tips for home cooks who love good food.