Line a 10x15 pan with parchment paper.
Mix ground chuck, 2/3 cup beef broth and salt and pepper together until mixture is easily spreadable.
Gently press and spread meat mixture into prepared pan until you form a thin even layer.
Using a knife, score each into 16 equal rectangles.
Use your finger to make 5 holes in each patty.
Place in freezer for at least 1 hour.
Remove frozen patties on parchment paper.
Preheat oven to 450.
Pour remaining beef broth (1 2/3 cup) into a baking sheet and spread minced onions over entire bottom of pan.
Allow to sit for 5 - 10 minutes.
Cut all dinner rolls in half to make buns.
Place froxen beef on top of onion mixture.
Place in oven for 10 minutes to allow burgers to steam cook (until they turn brown).
Remove and place cheese on each patty (if you are making cheese sliders).
Top each with a bun top and return to oven for 3 minutes.
Top each bun bottom with a dill pickle
Use a spatula to pick up each slider half and place on bun bottom.