Drain pineapple, reserving juice in a measuring cup, and add water to juice to measure 1 cup.
In a saucepan, heat juice to boiling; remove from stove and stir in raspberry gelatin. When gelatin is dissolved, pour into a medium bowl with cream cheese and mayonnaise. Mix until cheese is well incorporated. Add pineapple, cranberry sauce and walnuts, stirring well. Fold in Cool Whip? and turn into a 13 x 9-inch pan. Chill in refrigerator until set, about 2 hours.Makes 4