PREHEAT oven to 350°F. Mix peanut butter, sugar, ginger and 2 Tbsp. water in large bowl. Add cereal; toss to coat. Spread into a single layer in greased 15x10x3/4-inch baking pan.
BAKE 18 min. Remove pan from oven. Cool completely.
ADD cranberries; toss lightly.
serving size = 1/3 cup