This is an easy snack recipe that’s perfect as an after-school treat for kids. It’s made in a muffin tin and will be quick to throw together.    Ingredients:    1/3 cup light peanut butter  1/3 cup pure maple syrup  2 egg whites  1 tsp pumpkin pie spice  2½ cups low-fat granola  ¾ cup dried cranberries    Instructions:        Preheat oven to 250°F. Spray a 12-cup muffin tin with cooking spray and set aside.      In a medium bowl, beat together peanut butter and maple syrup on medium speed of…