Corned Beef Sliders Mustard (Printable Version)

Mini sandwiches with corned beef, Swiss cheese, tangy mustard on soft buns, ideal for parties or snacks.

# Ingredient List:

→ Meats

01 - 1 lb sliced corned beef

→ Breads

02 - 12 slider buns or mini rolls

→ Cheese

03 - 6 slices Swiss cheese, halved

→ Condiments

04 - 4 tbsp whole-grain mustard
05 - 2 tbsp mayonnaise (optional)

→ Vegetables

06 - 1/2 small red onion, thinly sliced
07 - 12 thin slices of dill pickle

→ Butter Mixture

08 - 3 tbsp unsalted butter, melted
09 - 1 tsp Dijon mustard
10 - 1/2 tsp garlic powder
11 - 1 tsp poppy seeds (optional)

# Directions:

01 - Preheat oven to 350°F. Line a baking sheet with parchment paper.
02 - Slice slider buns in half. Place bottom halves on the prepared baking sheet.
03 - Layer each bun bottom with corned beef, a halved slice of Swiss cheese, a few onion rings, and a pickle slice.
04 - Spread whole-grain mustard (and mayonnaise, if using) on the inside of each top bun.
05 - Place the top buns over the fillings.
06 - Mix melted butter, Dijon mustard, garlic powder, and poppy seeds (if using) in a small bowl. Brush generously over the tops of the buns.
07 - Cover sliders loosely with foil and bake for 10 minutes. Remove foil and bake for 5 more minutes, until the cheese melts and tops are golden.
08 - Serve warm.

# Expert Tips:

01 -
  • They come together in under 30 minutes but taste like theyve been simmering all day
  • The buttery tops get impossibly crispy while the cheese melts into every crevice
02 -
  • Covering with foil for the first 10 minutes keeps the buns soft while the cheese melts
  • The butter mixture needs to be brushed all the way to the edges or those corners will stay dry and sad
03 -
  • Assemble these up to 4 hours ahead and keep them wrapped in the fridge, then brush with butter just before baking
  • Warming the corned beef slightly for 30 seconds in the microwave makes it more flexible and easier to layer