
Heat the oven to 400°F. Press the ground beef into an even layer on a parchment-lined sheet pan, about the size of the slab of rolls. Sprinkle with minced onion, salt and pepper.
Bake 15 minutes until cooked through (160°F). Drain the fat by tilting the pan.
Slice the slab of rolls in half horizontally. Place the bottoms on a second pan, spread with ketchup and mustard, and top with half the cheese.
Lift the beef layer onto the buns, add the rest of the cheese and pickles, then the tops.
Brush the tops with melted butter, sprinkle with sesame seeds, and bake 8-10 minutes until the cheese melts. Cut into sliders.
Photo: DinnerDrop