1 lg. or 2 sm. pkg. blackberry Jello
1 (8 oz.) cream cheese
1/4 c. sugar
1 tsp. vanilla
8 oz. sour cream

Dissolve Jello in hot water as indicated on the box. Instead of cold water, add 1 can of blueberry pie filling. Chill to set. Mix all the other ingredients together and spread on set Jello.