These fluffy cinnamon sugar donut muffins are a nostalgic, quick, and easy treat topped with a sweet butter glaze and cinnamon sugar coating, perfect for breakfast or any occasion.
Do not overmix the batter to keep muffins tender and fluffy. Use room temperature eggs and buttermilk for best results. Dip warm muffins in glaze for better sugar adherence. If glaze thickens, add a splash of milk to thin it out.
Keywords: cinnamon sugar donut muffins, butter glaze, easy muffin recipe, breakfast muffins, homemade donut muffins, cinnamon muffins