1Heat oven to 400°F. Place cereal in resealable food-storage plastic bag; seal bag and crush with rolling pin or meat mallet (or crush in food processor).
2In medium bowl, stir together flour, sugar, baking powder and ginger. Cut in butter with fork until mixture looks like fine crumbs. Stir in cereal. Stir in pear, egg whites and just enough milk so dough leaves side of bowl.
3Place dough on lightly floured surface. Knead lightly 10 times. With rolling pin, roll dough 1/2 inch thick. Cut dough with 3-inch cutter dipped in flour. (Or roll dough into round, 1/2 inch thick, and cut into 12 wedges with knife dipped in flour.) Place about 1 inch apart on ungreased cookie sheet. Brush with milk.
4Bake about 16 minutes or until golden. Immediately remove from cookie sheet; serve warm.