Preheat oven to Cut rolls in half, horizontally, and place in 2 9x13 pans. Cut ham slices in half. Fold each slice in half and place one on each roll. Cut slices of cheese in half and place one half on each roll. Place one slice of salami and one pickle in the center of each roll. Replace top on each roll. Whisk together remaining ingredients. Slowly pour over sliders, making sure to cover each with the mixture. Cover with foil and cook in the oven for 15 minutes. Uncover the pans and bake for an additional 10 minutes.