Step 1

Place apples in large bowl; add granulated sugar, 2 tablespoons flour and the cinnamon. Stir until apples are evenly coated.

Step 2

Spray 4- to 5-quart slow cooker with cooking spray. Place apple mixture into slow cooker.

Step 3

In large bowl, mix 1/2 cup flour, the oats, brown sugar and salt. Stir until well combined. Using fork or pastry blender, cut cold butter into mixture until crumbly. Sprinkle over apple mixture. Cover and cook on High heat setting 2 hours. Turn off heat; remove cover, and cool 30 minutes.

Step 4

Serve warm with a scoop of your favorite ice cream.