Spray medium slow cooker with non-stick spray and add sliced apples. Sprinkle cinnamon and sugar on top and stir to coat evenly.
In a separate bowl mix the remaining ingredients, cutting in butter with a pastry blender until you get pea size pieces of butter. (Or cut butter into small pieces by hand and stir into dry mix.)
Spread mixture on top of apples coating evenly. Cook on high for 2 hours checking occasionally and pulling edges in if needed to prevent burning. Turn slow cooker to low for 1 more hour or until cooked thoroughly.
When turning apple crisp to low, take a separate, small slow cooker to warm up caramel for drizzle. Warming time will vary depending on style of crockpot and amount of caramel.