Spray the inside of a ring jello mold or a bundt pan with nonstick spray.
In a large bowl, stir together the strawberry jello packets and 1½ cups boiling water until the jello is fully dissolved. Stir in the cranberry sauce, pineapple, and strawberries. Pour into the prepared mold and refrigerate until fully set, about 3 to 4 hours.
Once the strawberry jello layer is set, make the cream cheese filling. In a large bowl, use an electric mixer to combine the sour cream and cream cheese until smooth. Spread this in an even layer on top of the set strawberry jello layer. Chill for 30 minutes in the fridge or 15 minutes in the freezer.
In a large bowl, stir together the raspberry jello packets and 1½ cups boiling water until the jello is fully dissolved. Stir in the fresh raspberries. Cool until the mixture is at room temperature. Pour onto the cream layer and refrigerate until fully set, about 2 to 3 hours.
Serve garnished with fresh mint and berries, if desired.
Notes
If you’re using a bundt pan, when you go to unmold the jello, it can be helpful to dip the mold into hot water for a minute or so to help loosen it.