Rinse the cranberries under cool water and pick out any soft or shriveled ones. Pat dry. Add to a food processor and pulse in short bursts until finely chopped but not pureed; you want small pieces, not a paste. If you do not have a food processor, chop carefully by hand with a sharp knife.
1 12-ounce bag fresh cranberries
Transfer the chopped cranberries to a medium bowl and stir in the granulated sugar until well combined. Cover and refrigerate for at least 1 hour, or up to overnight, to let the cranberries release their juices and mellow their tartness.
1 12-ounce bag fresh cranberries, 1 cup granulated sugar
In a heat-safe bowl, add the raspberry or cranberry gelatin. Pour in 1 cup of boiling water and stir until the gelatin is completely dissolved. Stir in 1 cup of cold water. Let the mixture cool to room temperature so it does not cook the fruit, but do not let it fully set.
1 3-ounce package raspberry or cranberry-flavored gelatin, 1 cup boiling water, 1 cup cold water
Drain off any excess liquid from the sweetened cranberries (a small amount of liquid is fine). In a large mixing bowl, combine the cranberries, drained crushed pineapple, chopped apple, celery, and chopped nuts. Stir gently to mix.
1 12-ounce bag fresh cranberries, 1 20-ounce can crushed pineapple, 1 medium apple, 1/2 cup celery, 1/2-3/4 cup nuts
Pour the cooled gelatin mixture over the fruit and nut mixture. Stir gently until everything is evenly coated and distributed.
1 3-ounce package raspberry or cranberry-flavored gelatin
Pour the cranberry–gelatin mixture into a 9×13-inch glass dish or a large serving bowl. Smooth the top. Cover and refrigerate for about 2–3 hours, or until the mixture is set and jiggly like soft gelatin.
When the gelatin base is set, prepare the topping. In a medium bowl, beat the softened cream cheese with an electric mixer until smooth and fluffy. Add the powdered sugar and vanilla and beat until silky. In a separate cold bowl, beat the heavy cream to soft–medium peaks, watching carefully so it does not turn to butter. Gently fold the whipped cream into the cream cheese mixture with a spatula until no streaks remain.
1 cup heavy whipping cream, 4 ounces cream cheese, 1/4 cup powdered sugar, 1 teaspoon pure vanilla extract
Spread the creamy topping evenly over the chilled cranberry layer. Use the back of a spoon to create swirls or smooth the surface. Garnish with extra chopped nuts, a few fresh cranberries, and/or orange zest if desired.
fresh cranberries, extra chopped nuts, orange zest
Cover the dish again and chill for at least 1 more hour so the layers firm up together. For neat squares, chill several hours or overnight before cutting with a sharp knife, wiping the blade between cuts.