Preheat your oven to low broil. Carefully slice the submarine rolls lengthwise, ensuring you don’t cut all the way through. Place them cut side up on a parchment-lined baking sheet.

In a mixing bowl, stir together the garlic butter ingredients: melted butter, minced garlic, chopped fresh parsley, and salt. Use a pastry brush to generously apply this garlic butter mixture to the cut sides of the rolls.

Broil the rolls in your preheated oven for 2-3 minutes until they are golden and crispy, keeping a watchful eye to prevent burning.

On a cutting board, chop together pulled pork, sliced ham, diced pickles, and Swiss cheese until finely diced. Mix in yellow mustard until well combined.

Scoop the filling into the warm, toasted rolls, pressing it slightly to hold the sandwich together. Serve immediately while hot and melty.