1. Preheat oven to 350°F In large bowl, gently toss fruit (I leave in about 1/4 cup syrup from canned peaches) and 1/2 cup cake mix.
2. Spoon fruit mixture into an ungreased 8-inch square pan (a 10-inch deep-dish pie pan is recommended by the recipe).
3. In separate bowl, place remaining cake mix, full pouch cinnamon topping, butter, oats and water.
4. Using an electric mixer, mix on medium speed until mixture is crumbly.
5. Sprinkle topping over fuit mixture.
6. Bake 25-30 minutes or until golden brown.
7. Serve warm with vanilla ice cream, if desired.