Have your toaster oven ready to use.
Cut the crust off 1 slice of bread. Place one slice of turkey, a slice of Swiss cheese, and a squirt of BBQ sauce on one half of the slice of bread. Fold the bread one corner to the other corner across from it and pinch the sides together. Repeat with the other slices of bread then spray them with a little cooking spray and toast in the toaster oven until golden brown.