With a cinnamon sugar swirled into the batter along with a sprinkle of cinnamon sugar on top of each muffin, these muffins are undeniably snickerdoodle-y.
Fill muffin cups until nearly full and sprinkle the tops with cinnamon sugar. Bake for 18-25 minutes or until a toothpick inserted in the center of a muffin comes out clean.
(jumbo muffins will take longer to bake compared to regular muffins).