Make the roast beef: preheat the oven to 375 degrees F.
Combine the granulated garlic, onion powder, rosemary, salt, black pepper in a mixing.
Rub the beef roast all over with mustard then season with dry mix all over. Place on a roasting pan, drizzle with olive oil and place in center of oven and cook for 40 minutes.
Remove from the oven, loosely tent with foil and allow to rest for 15 minutes before slicing into thin pieces.
Make sandwich spread: combine cream cheese, mayonnaise and mustard in a mixing bowl and combine well. Fold in giardiniera, cherry peppers and garlic. Season with salt and pepper then set aside.
Assemble sandwiches: Split the King’s Hawaiian Sweet Mini Sub Rolls brush the insides of the rolls with melted garlic butter. Toast on a flat griddle on both sides until golden brown.
Smear sandwich spread on cut side of rolls “coast to coast”. On the bottom halves top with approx 3oz of sliced roast beef. Top with a slice of pepper jack then melt under broiler.
Once melted, top with chopped giardiniera, grated parmesan and top half of bun.