- 1 pound cranberries, chopped
- 1 cup white sugar
- 1 (16 ounce) package frozen whipped topping (such as Cool Whip®), thawed
- 1 (10.5 ounce) package miniature marshmallows
- 1 cup chopped walnuts
- 1 (15 ounce) can crushed pineapple
- Stir cranberries and sugar together in a bowl; refrigerate 8 hours to overnight.
- Stir whipped topping, pineapple, marshmallows, and walnuts into the cranberry mixture.