Measure as much cereal as you want in your bowl (about 2 cups). Crush to fine crumbs in blender, or place in a plastic bag, hold it shut, and crush with the heel of your hand. Pour into medium mixing bowl. In a one-cup measure, microwave the butter on 100% power until melted; work butter into crumbs until mixture is moist and crumbly. Slice apple into thin, even slices, then place in microwave-safe, shallow baking dish. Spread cereal mixture evenly over apple slices. Microwave on 50% power 3 minutes, or until heated through and apple is tender. Sprinkle with cinnamon and brown sugar; microwave on 50% power 2 minutes longer. Serve hot with a little milk, a pat of butter or jam, or some fresh fruit.
Variations: Try banana slices in place of the apple. Also, substitute 1 tb your favorite jam for 1 tb of the butter. Stir the jam into the butter in the cup immediately after butter is melted. Try using an uncooked hot cereal, such as Cream of Wheat or Quaker Oat bran in place of the Shreddies, for a deliciously different porridge. Serve with whipped cream, ice cream or yogurt for dessert.