Instructions:
Spray the bottom and sides of a large oval slow cooker with cooking spray.
Open the cans of cinnamon rolls and set aside the icing packages. Cut the cinnamon rolls into quarters.
Add the cinnamon rolls in an even layer in the crock pot. Top with an even layer of apples.
In a large bowl, add the eggs, half and half, maple syrup, vanilla, and cinnamon. Whisk until well combined. Pour evenly over the cinnamon rolls.
Cover the slow cooker and cook on low for 2 1/2 hours. Butter from the cinnamon rolls may rise to the top making the casserole look wet. That does not mean the casserole needs more cooking time.
Drizzle the icing packages over the casserole or serve with the icing packages to drizzle over individual servings.
Serve warm. Keep the slow cooker on the warm setting if not serving immediately.