French Onion Roast Beef Sliders
50 minMakes 24 sliders
Caramelized onions, roast beef and melted Swiss cheese layered on slider rolls, brushed with a mustard-butter glaze and baked until golden.
| prepPreheat oven to 350°F / 175°C | ||||||
| prepLine a 13×9-inch / 33×23 cm baking dish with aluminum foil | ||||||
| 30 g unsalted butter | Cook onions until soft, 20 min | Simmer with broth & Worcestershire, 5–10 min | Layer roll bottoms, cheese, beef & onions | Top with roll tops | Brush glaze over sliders | Bake 350°F / 175°C, 15–20 min until golden |
| 900 g chopped onion | ||||||
| 120 ml beef broth | ||||||
| 1 tablespoon Worcestershire sauce | ||||||
| 24 slider rolls, halved horizontally | ||||||
| 8 slices Swiss cheese (first layer) | ||||||
| 16 slices deli roast beef | ||||||
| caramelized onions (from step 1) | ||||||
| 8 slices Swiss cheese (top layer) | ||||||
| roll tops | ||||||
| 115 g unsalted butter, melted | Whisk butter, mustard, Worcestershire, garlic & salt | |||||
| 2 teaspoons Dijon mustard | ||||||
| 1 teaspoon Worcestershire sauce | ||||||
| 1/2 teaspoon garlic powder | ||||||
| 1/2 teaspoon salt | ||||||
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