Heat the sauerkraut in a small saucepan. Drain. Spread Russian dressing on each slice of bread. To build each sandwich: Evenly layer 4 slices of bread with pastrami, sauerkraut and Swiss cheese. Top with remaining bread. Butter outside of bread with softened garlic butter and place sandwiches in one or two skillets. Grill, pressing down with spatula. When one side is toasted, turn and grill other side until cheese is melted and pastrami is warm.
Makes 4 sandwiches.
