The beauty of Cinnamon Sugar Donut Muffins lies in their simplicity. The recipe starts with a basic muffin batter, which is then baked to perfection. Once out of the oven, the warm muffins are dipped in melted butter, allowing the cinnamon sugar mixture to adhere to the surface. The result is a heavenly combination of soft and fluffy muffins with a sweet and crunchy cinnamon sugar coating.