Peel or don't peel 1 small to medium-sized apple, core and slice or dice. Place in freezer-quality plastic zippered bag along with 1 packet of sweetener or a teaspoon of sugar, ¼ teaspoon cinnamon, ¼ teaspoon cornstarch, and 1 tablespoon water.
Seal the plastic bag and shake well to mix ingredients. (If you prefer, place all ingredients into a small microwave-safe bowl and cover loosely.)
Reopen bag just a touch to vent. Microwave on High for 2 minutes-- longer if you use a big apple.
Carefully (it will be HOT and steamy) open bag and pour over plain or cinnamon-sugar pita chips, flour tortilla chips, oatmeal or ice cream.
