1 (6 oz.) can frozen cranberry juice cocktail concentrate
3/4 c. light rum (juice can full)
1 med. banana, cut up
2 tbsp. lime juice
2 1/2 c. ice cubes

In blender, combine concentrate, rum, banana, and lime juice. Cover and blend until smooth. Add ice cubes; cover and blend until slushy. Pour into stemmed cocktail glasses. Garnish with additional banana slices, if desired. Makes 4 (6 ounce) servings.