Instructions:
Spread a generous amount of mustard on one half of the roll, then spread the other half with the sandwich spread.
Layer the pastrami and cheese on one half of the bread. Top with the other half.
Place sandwich in a panini press and cook for 4-5 minutes until crisp and flat. If you don’t have a panini press, melt 2 tablespoons butter in a sauté pan over medium heat. Place the sandwich in the pan and press down with a weight or spatula. Cook for 4-5 minutes per side, or until crisp and flat.