Preheat oven to 350ºF. Lightly coat two baking sheets with nonstick cooking spray; set aside. In a large bowl, stir together banana, peanut butter, honey, and vanilla. In a small bowl, combine oats, cereal, milk powder, cinnamon, and baking soda. Stir the oat mixture into the banana mixture until combined. Stir in dried cranberries.