Ingredients
1 1/2 pounds ground beef chuck (85 percent lean)
Kosher salt and freshly ground pepper
12 Hawaiian sweet rolls, such as King's Hawaiian (1 package)
6 ounces American cheese, thinly sliced
Unsalted butter, melted, for brushing
Sesame seeds, for sprinkling
Sliced iceberg lettuce, cherry tomatoes, and cornichons, for serving
Toothpicks or small bamboo skewers, for serving
Preparation
Preheat broiler with a rack in upper third. Divide beef into twelve 3-inch round patties; place on a rimmed baking sheet and season with salt and pepper. Broil until browned, about 8 minutes. Transfer to paper towels.
Switch oven to 350°F. Using a serrated knife, split rolls in half horizontally. Place bottom half on a parchment-lined rimmed baking sheet. Layer with half of cheese; top each roll with a burger patty. Layer with remaining cheese; place other half of rolls on top. Brush rolls with melted butter and sprinkle with sesame seeds. Bake until cheese is melted and rolls are lightly toasted but still soft, 8 to 10 minutes. Using toothpicks, skewer each slider with a small piece of lettuce and tomato and cornichon slices on top; serve.