Preheat your oven to 350°F (175°C) and grease a 9 x 13-inch baking dish with non-stick spray.
Open the cinnamon roll dough and cut each roll into quarters. Place the quarters evenly in the prepared baking dish.
In a large mixing bowl, whisk together the eggs, milk, vanilla extract, ground cinnamon, and nutmeg until well combined.
Pour the egg mixture evenly over the pieces of cinnamon roll dough in the baking dish, ensuring that all pieces are coated.
If desired, sprinkle the chopped nuts over the top for added crunch and flavor.
Cover the baking dish with aluminum foil and bake in the preheated oven for 25 minutes.
After 25 minutes, remove the foil and bake for an additional 15-20 minutes, or until the casserole is golden brown and cooked through.
Remove the casserole from the oven and let it cool for a few minutes. Drizzle with maple syrup and top with the included icing from the cinnamon roll dough.
If desired, dust with powdered sugar for an extra touch of sweetness before serving.
Notes
Serve warm, garnished with fresh berries or a dollop of whipped cream for added indulgence.