Remove crockery pot from heating element and turn on the heat to high to preheat the unit for 15 minutes.
In large mixing bowl, combine all ingredients except pie crust and stir until well mixed.
Roll pie crust into a circle slightly larger than crockery pot (size of circle will vary depending on your crock pot) and place crust into bottom of the pot; the crust should come up the sides of the pot about 1 inch and can be folded down to make a thicker crust"lip" if desired.
Spread apples and berries evenly over crust.
In small bowl, blend topping ingredients then sprinkle the mixture evenly over the fruit.
Place crockery pot into the preheated base.
Cover with the lid and cook on high for 1- 1/2 hours or until apples are tender.
Length of time depends on your crock pot, but leave the lid on the unit for at least 1 hour without removing it even once!
This is important to keep the moist heat in the crock pot.
Serve warm with ice cream and a dash of cinnamon.
If you prefer a brown crust, cook the unfilled crust in the crock pot for 15 minutes before adding the fruit filling and topping.