Step 1: Preheat and Prepare
Preheat your oven to 375°F (190°C) .
Line a standard 12-cup muffin tin with parchment liners or lightly grease the cups for easy release.
Step 2: Mix Dry Ingredients
In a medium bowl, whisk together the all-purpose flour , granulated sugar , baking powder , and salt until well combined. If using gluten-free flour, sift it first to remove any lumps.
Step 3: Combine Wet Ingredients
In a separate bowl, beat the egg , then stir in the melted butter and milk until smooth. Add the ground cinnamon and mix until fully incorporated.
Step 4: Combine Wet and Dry Mixtures
Gradually add the dry ingredients to the wet mixture, stirring gently with a spatula just until combined. Be careful not to overmix—the batter should still have a few small lumps for the best texture.
Step 5: Portion the Batter
Divide the batter evenly among the prepared muffin cups. Use an ice cream scoop or spoon for consistency. Fill each cup about ⅔ full to allow room for rising.
Step 6: Bake to Perfection
Place the muffin tin in the center of the preheated oven and bake for 18-20 minutes , or until a toothpick inserted into the center comes out clean. Let the muffins cool in the tin for 5 minutes before transferring them to a wire rack.
Step 7: Make the Glaze
While the muffins cool, prepare the glaze. In a small bowl, whisk together the powdered sugar , milk , and vanilla extract until smooth. Adjust the milk as needed to reach your desired consistency.
Step 8: Drizzle and Serve
Once the muffins are completely cool, drizzle the glaze generously over the tops. Allow the glaze to set slightly before serving. For an extra touch, sprinkle coarse sugar or cinnamon on top for added flair.