Prepare the Yogurt: Drain the yogurt overnight in a fine mesh sieve lined with cheesecloth or paper towels.

Mix the Filling: In a large mixing bowl, combine chopped carrots, cabbage, drained yogurt, and dressing. Season with salt and pepper.

Prepare the Bread: Lay out slices of bread and spread a layer of filling on one slice. Top with another slice.

Cut and Assemble: Cut sandwiches into halves or quarters and arrange on a platter.

Store: Place sandwiches in an airtight container, layering with wax paper, and refrigerate for up to a day.