Party Roast Beef Sandwiches

This easy roast beef slider recipe is perfect for make-ahead, bite-sized sandwiches.
Servings: 12
Yield: 12 sliders

Ingredients

½ cup prepared horseradish

1 (12 count) package Hawaiian bread rolls, split

12 slices deli roast beef

12 slices deli-sliced Swiss cheese

½ cup butter

1 onion, finely chopped

2 tablespoons brown sugar

1 tablespoon spicy brown mustard

1 ½ teaspoons Worcestershire sauce

1 pinch garlic powder, or to taste

2 teaspoons poppy seeds

Directions