First layer: Mix 2 pkgs. red raspberry jello with 2 cups hot water and 2 cups cold water. Chill and set. Second layer: Heat l cup half & half and 1 cup sugar. Mix l pkg. Knox gelatin with l cup cold water and 1 tsp vanilla. Pour the two mixtures in a blender with one (8 oz) pkag. cream cheese. Blend. Cool, pour on first layer. Third layer: l pkg black raspberry jello and l cup hot water and 1 can undrained blueberries.