2 pkg. graham crackers, crushed
1/2 c. butter
1/4 c. sugar
1 can blueberry pie filling
12 oz. Cool Whip
1 sm. bag miniature marshmallows

Make a crust of the cracker crumbs, butter and sugar. Pat into 9 x 12 pan. Mix filling, Cool Whip and marshmallows together and spread over crust. Top with more Cool Whip if desired. Chill. Cherry pie filling can also be used.