This cinnamon roll casserole recipe combines all the flavors of classic cinnamon rolls with the ease of a casserole. It's perfect for breakfast or brunch gatherings, or whenever you're in the mood for a sweet treat.
Preheat the oven to 375°F. Spray a 9x13-inch baking dish with nonstick cooking spray.
Open the cinnamon rolls and set aside the included icing packet for later. Cut each cinnamon roll into quarters.
In a large bowl, whisk together the eggs, milk, maple syrup, vanilla extract, and ground cinnamon until well combined.
Dip a cinnamon roll piece into the egg mixture, evenly coating all sides, and place in the baking dish. Repeat with the remaining the cinnamon roll pieces. Sprinkle the top with pecans, if using. Pour remaining egg mixture over the top to ensure the pieces get covered.
Bake 25 to 30 minutes, or until the cinnamon rolls are golden brown and cooked through. Let cool slightly.
In a small bowl, stir together the sour cream and included icing until smooth.
While the casserole is still warm, drizzle the icing mixture over the top. Serve warm and enjoy!