Swiss Stuffed Sliders with Mustard Aioli

Preheat broiler to high. Arrange cut slider rolls face up on a baking sheet and top each with a thin slice of butter. Broil buns for 1–2 minutes until lightly golden, and set aside.

Meanwhile, make aioli. Combine mayo, mustard, and Worcestershire sauce. Taste, and add a sprinkle of salt if you’d like.

Combine beef with Worcestershire sauce and salt. Form into 16 thin patties, each slightly larger than the slider buns. Top 8 patties with 2 squares of Swiss, then place another patty on top to form a sandwich. Press edges of burgers together so you end up with 8 slider-sized burgers stuffed with 2 squares of Swiss cheese each.

Preheat 1 tablespoon of butter in a cast iron skillet. Working in batches if you need to, griddle sliders for about 3 minutes on each side until browned on the outside and warm on the inside.

Layer slider buns with lettuce, pickles, aioli, and a burger. Eat.

Notes:
Patties may be made and stuffed in advance, then grilled right before serving.
Burgers may be grilled instead of cooked inside, or even broiled for 2 minutes on each side. Cook them as you would your favorite burger!