Preheat a non-stick pan or panini style grill, over medium heat.
Spread the dressing on both slices of bread (or on the side if desired). Layer the bread with cheese, sauerkraut, pastrami, more cheese, and slice of bread.
If using a panini style grill, lightly spray with non-stick spray and cook the sandwich until it is golden brown and cheese is melted. (If using a pan on the stovetop, add about a teaspoon of oil or more if needed, then the sandwich and cover with a lid. Cook on both sides until the bread is golden brown and the cheese is melted.)