Preheat the oven to 350º Fahrenheit. Spray a 9x13 baking pan with cooking spray.
Open the cinnamon roll tubes and set aside the frosting. You'll use this to drizzle over the baked casserole.
Cut each cinnamon roll into 4 pieces.
Place the cinnamon roll quarters evenly in the baking pan.
In a mixing bowl, whisk together the cream, eggs and cinnamon. Make sure the eggs are well mixed.
Pour the egg mixture over the cinnamon rolls.
Drizzle the syrup over the top.
Bake for 30-35 minutes until the top is golden brown and puffy.
Heat the frosting for 5-10 seconds in the microwave, then drizzle over the warm casserole.
The calories shown are based on the recipe serving 12, with 1 serving being 1/12 of the casserole. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**