Slice the hoagie roll horizontally to assemble the sandwich open-faced.
Spread the herbed cream cheese on both sides of the loaf.
Layer the salami slices on the bottom half of the loaf. I like to fold the salami slices in half, and then again in half. It adds texture and bulk to the sandwich by having folded pieces of salami. You can also buy high-quality salami from the deli and cut them into thicker pieces.
Next, layer on the sliced tomato.
Add the fresh arugula.
Carefully close the sandwich and slice it in half to enjoy!