HEAT oven to 375°F. Coat 10-inch cast iron skillet with no-stick cooking spray. Stir cookie mix, oil, egg and water in medium bowl until dough forms. Press evenly onto bottom and 1-inch up sides of skillet. Top evenly with apples.
BLEND oats, brown sugar, butter and cinnamon in small bowl in fork until crumbly. Sprinkle evenly over apples.
BAKE 25 to 30 minutes or until edges are golden brown and apples are fork tender. Cool at least 30 minutes. Cut into wedges to serve. Top with ice cream and caramel topping, if desired.
Serving Size (1/12 of recipe), Calories 410 (Calories from Fat 130), Total Fat 15g (Saturated Fat 4.5g, Trans Fat 0g), Cholesterol 40mg, Sodium 340mg, Total Carbohydrate 67g (Dietary Fiber 1g, Sugars 44g), Protein 4g; Percent Daily Value*: Vitamin A 6%, Vitamin C 2%, Calcium 6%, Iron 8%.
*Percent Daily Values are based on a 2,000 calorie diet.